Agenda VR3, Palm m505, or iPAQ? (Score 1)

Ok, I have done a little research in the past day, and I have found that the Palm m505 looks nice, and appears to be nice, but nobody seams to put it on they're top list. I dunno, let me get to the point here. This is a review done on the Agenda VR3 from O'Reilly, and it doesn't look /nearlly/ as good as I has hoped. Doesn't even have color. shrug The iPAQ, from reading everyones post, also sounds disappointing. Specially with you only being able to push down one button at a time. Ok, what PDA should I get, and how would I put linux on it?