I suggest you stick with 9.1 for the time being. When a distro is released, it is full of bugs, this applies both to MS and Linux. I have never used XP but was an 3.1, 95, 98 and ME user till I started using Mandrake. I am still no Linux Guru, but as a former Ms man I can tell you the advantages and disadvantages of Linux over Windows.
A new Linux user will probably get fed up fairly early with not being able to run Direct x games and windows files. This is not Linuxs fault as it is Windows that keeps the source secret. So most software developed is the big disadvantage. The other disadvantage is that it is not quiet as user friendly as windows.
But, with a bit of thought and work you will begin to love Linux more and more the longer you use it. I almost gave up after a month, but when I became accustomed to how it worked, that took me six month, I love the system and it is so nice to get mp3s and movies, using Limewire instead of kazza without having to reboot my system to regain connection, or having to backup or reinstall my system. Ussually my system is up from when I wake up to when I go to sleep.
So the main advantage is reliability and the main disadvantage is that it takes a bit of thought and research to get things to work as you want. By the way Winex is great for running windows apps and games.