Libretto vs PDA, etc

[LAZYB]

I'm a pilot and would like a sub notebook or PDA to take on the road and use in the cockpit. New/used is not an issue. I don't really want to spend more than $500. Looking to pickup e-mail, web surf, store multiple databases, view weather on the web, investment/Fidelity, etc. Have Inspiron 7000 @ home w/15" screen, looking for something more convenient to carry in my flight case. Not that tech savvy. Will Libretto 50,70,100,110 with or without over-clocking give me more power/resources than PDA - Compaq iPAQH3650, HP Jornada 547/548, PSION Series 7, etc. I've been impressed with everything I've ever seen on the Libretto. Any thoughts or suggestions? Thanks in advance.

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