so thats my recommendation. a PB170/180, as they have a good amount of "oomph", are easy work on and have pretty decent keyboards as well as a very awesome trackball.

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I second Dan's recommendation. As long as you find one without the "tunnel vision" screen problem, a 170 or 180 would be a great choice. The 170 overclocks very nicely (I have yet to encounter one that can't get to 33MHz), and is very easy to work on. And even with its limit of 8MB of RAM, it is able to surf (after a fashion; perhaps dog-paddling is a better claim).

The Duos would be nice choices, were it not for their tragic keyboards. I have a stack of Duos, and very few of them have good keyboards. Most of them will drive you homicidal or suicidal after mere minutes of use.