i spent 2.5 weeks going through all the linux os i had listed, PClinuxs was
great in that it booted up without hitch, however, it was very slow, maybe
slower than ubuntu on my 10 yo hardware. i hate the fact for one reason or
another everytime an OS booted up of live cd, I couldnt use it when installed.

As for 64bit, it takes so much extra effort to configure stuff especially for
64bit that the time saved from the extra computing power is so not worth it.