I recommend Win7 to anyone whose system can run it. I run multiple operating systems & installed Win7 Beta when is was available in early 2009. Then I installed Win7 Release candidate on my new system & my friend Gloria's system. Both Gloria & I love Win7. We now have the commercial version on both systems. Win7 is incredible in finding drivers & keeping a system up to date. The graphics are great. It is stable & easy to use. I have an old printer which never ran on 64Bit XP. Tech support claimed that there were no drivers for a 64Bit system. 64Bit Win7 found a driver for that printer. Win7 has a "run as adminstrator" option which avoids hassles that friends of mine reported with Vista. Due to articles by various Geeks (my kindred) & complaints by various friends, I never used Vista. Gloria's system was built (by me) in 2004 & had no trouble running Win7 with 1GB of memory. I recently added another 1GB. She did not notice any increase in speed, but I think it probably runs a bit faster. I am running 32Bit & 64Bit XP as well as 32Bit & 64Bit Win7 on my new system. I use XP only to avoid installing a lot of seldom used software under Win7. I run 32 & 64Bit versions due to software which will not run on a 64Bit system. There will come a time when I phase XP out. BTW: When you buy Win7, you get both the 32Bit & the 64Bit versions.