I don't particularly care about voice recognition. I use my systems a lot in class, and I can't very well yell out commands in public.

I don't think PSP has a mic. I hear it's coming out with camera, GPS, and keyboard attachments though. I haven't looked into what DS accessories are coming out, and I know it won't need a keyboard because of the sylus, but I think it'll be interesting to see how these two systems evolve.