As a person who returned three Vista SP1 computers a few months ago, and purchased a Mac and also installed XP to get away from Vista, I would say some of the problems have definitely been worked out, but certainly not all like drivers or memory allocation or older software to work. Vista certainly has improved from the time it was first released, but it is still not better than XP. If you look any any post that disagree with this, you will never see anyone providing anything specific on why they think Vista is better-none that are legitimate. I have probably spend more money on Vista computers and worked closely with the OS more than anyone I know. The top thing you need to ask yourself is what do you gain from Vista?
Vista is still slower than XP even with newest tuning download. When trying to go from one OS to another, there are lots to consider:
1) What are you using the OS for?
2) What features is it that Vista has that is not on XP that you feel you must have?
3) Will the edition of Vista you have have less or more features than the version of XP you currently have?
4) Will the applications you have, run on Vista as well or better than they are currently on XP?
These are basic issues Vista PC are still having:
1) Older software applications are running poorly or not at all.
2) If you are into gaming, "NO" games that work with XP will work with Vista.
3) Memory allocation-In order to run applications in XP you need only 512 MB RAM, for Vista, you "require" 2 GB RAM
4) XP actually has more feature than most Vista Editions.
5) Resource hog-For most, when they buy Vista and run it, they find, despite the improved hardware they have and additional money they spent, their applications run slower on Vista than on XP. On the other hand XP will run any software faster and more efficiently than Vista-the only exception are very rare gaming applications that use Direct X 10 which is not a standard for anything.
6) Still problems with drivers for software and devices working.
7) Complaints that stated processor requirements are far too low.
An important point is, there are no issues with the quality of hardware -only the Vista OS.
MS keeps raising what they say are the requirements to run Vista. Here is what they claim are the minimum memory requirements here: http://www.microsoft.com/windows/windows-vista/get/system-requirements.aspx it is important you read this before you make your decision. Many people say you need a minimum of 2 G RAM, but Manufacturers are now adding 3 GB into their new computers. MS use to say it was 512 MB and they were dedicated to bringing down memory allocation requirements, but they are going in the other direction to try to solve their other prblems. If you have every spoken to a person with an 800MHz Processor and 1 GB RAM, you will find some angry people.
If you speak to the Geek Squad or go to Best Buy or Circuit City or your local PC, or anyone who regularly deals Vitsa customers- with one thing is clear; there are still numerous problems with drivers because Vista still has not completed platforms that drivers can attach to for Software companies. And as some are being completed, software companies now must decide if it's worth it to even try 1.5 years after the OS was introduced. Microsoft still has a tremendous marketing issue in that some software companies and device companies no longer care about being associate with Vista. For them it's silly to invest further resources for Vista when the payback will only be for 1 year and then the sales may not cover additional investment costs (6 months to make the drivers and only 6 months after that before another OS system comes out from Microsoft. This is a problem that Microsoft created for itself. Software companies are beginning to migrate to OSX and Linux where roll outs are far more stable and where market share is slowly being taken away from Microsoft.
The key to knowing if Vista is ready for showtime is when large fortune 500 companies begin investing in Vista. That was always my standard. When I tried to break that policy with Vista, I had more headaches than I can count. If XP is working fine for you as it is for everyone else, my guess is it's working a lot better than anyone on Vista-what can they do that you cannot do? Or do better on XP? I'll tell you nothing! In my opinion Vista is the single reason why PC sales are down over a year and the last three months. It's also a major reason why Linuxs and Apple sales are way up over that same time period.
I have three free edition of Vista-Ultimate, Business, Home Premium and still have them in my refrigerator freezer. In my opinion, XP is still the strongest 32 bit OS out there, Windows 2000 is still 2nd and maybe Vista is next. Leopard is a 64 Bit OS, but can run 32 bit applications fine. When Vista improves to the point where it's simpler and better than XP, I will defrost one Edition of Vista and try it. Frankly, I don't see that happening before Windows 8 comes out. Viruses that are attacking Vista now are 10X stronger than anything XP ever experienced.
In conclusion, right now there are more people with Vista that would love to be in the position you are and have XP to use and never see Vista again ever that there are people with XP willing to give that up or seriously consider it for Vista.
I would consider yourself very lucky to have XP and give yourself a hand at being intelligent enough to get XP when you did. It was probably one of the best decisions you ever made. For me, there is nothing that Vista does, that I cannot do on XP better. I have never seen a person who claimed they liked Vista, quantify why they think its any better than XP-I would challenge the others that make that claim, to indicate specifically why
I hope this helped.