Bonk, I am nowhere near the computer man you are, but why not a notebook or laptop?
If I had to do what you did, I'd personally get a HP 48G+ with all the add on RAM cards. In those days, HP made incredibly good stuff.
(By the way the 48G+ is a programmable scientific calculator with decent (128 Kb) RAM, clock, alarms, IR communications, and LOTS of user[really, fans] made software to do whatever, from playing chess to three level deep and searchable periodic tables to many engineering apps...
... even a Star Trek game! Of course this would mean turning my back on the Wintel, Apple, etc. world of computing... )
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EDIT: I should add, I'm kidding.