As much as I like XP Pro, it's going to be hard to give it up and use 7/64 exclusively. I will still keep my DOS Box and my early versions of Windows. I never did use NT and only used 2K as a server which I migrated all that to XP Pro. So far I have no complaints about 7/64 Ultimate.
Currently I am using Ubuntu operating system currently and it is very good operating system. I did not face any problem with this operating system. I like this because, there is no fear of virus in computer due to this OS.
been using xp up until yesterday just got win 7, but i would like to switch to linux but daren't in case it goes t **s up as i don't have a rescue disk