I like to use Windows XP, is better that 7.
After installing it i can play most of the games like GTA 4, Just Cause 2 etc. and it makes my Windows faster than xp2.
it is the best option for the XP desktop computers and it is really good in usage.
Is making a big difference about how Windows works. I didn't know about this upgrade, but after i have install it, my Windows is working faster.
In my opinion SP3 is the best version for upgrading Windows XP. I do not have any errors and I can install all kind of applications.