I would recommend that you avoid vista, I have run into some issues with opening apps that require admin authorization that lock up other programs. I really like XP and to my understanding 7 is a beefed up XP
two things: There is nothing wrong with Vista. People who have problems with Vista are clearly apophenic. Additionally, regarding versions:
2K: Version 5.0
XP: Version 5.1
Vista: Version 6.0
Windows 7: Version 6.1
Windows XP is a enhanced version of 2K; Windows 7 is an enhanced version of Vista. Either way, Vista itself is just a modification to the same codebase as XP, just as XP was a modification to the codebase for 2000 and 2000 was an enhancement to NT4 before that, and that to 3.51 before it, and so on.
The problem here not that some yahoo is spreading rumours that "windows 7 is based on XP" which is only true to the pedant, but also that people are gobbling it up without question.
Otherwise mac has a solid OS.
Depends who you ask. If you ask me, they
had a solid OS with Mac Classic; sure, some of the memory management was arcane, and programming it could be a huge PITA, but the point was that it was quite literally designed with usability in mind. Windows, and to a far greater extend linux desktop environments, sort of had their UI paradigms congealed, rather than designed.
Or... If you feel like learning something new you can always load one of the various flavors of Linux, cool thing about it is that it is all open source so you can have all the programs you want for free.
Open Source is not about free software. In fact, Open Source and Free software are wholly unrelated; there are programs that are open source that aren't free as much as there are free programs that aren't open source. My point is that using the term "Open Source" as if it is somehow better then "free" is only true when you actually plan on working with said free source. otherwise it's just an extra word on top of free.
As far as non-programmers are concerned, it shouldn't matter wether a program is open source or not. Once a house is built, the blueprints are meaningless and uninteresting to anybody who isn't a draftsman.