Da_Blitz -- thanks for the info and the kind offer. I'll see if I can come up with anything to usefully test-compile. The Kohjinsha seems like a nice piece of kit. I'd love to get my hands on one.
adf -- floating point all the way. I do a lot of natural language processing / AI work... if I can get a decent bump to FP operations, that makes my life a heck of a lot easier, definitely. Probably doesn't force me to write better code like having no serious FP support would, but what the hell. I dunno, the way-more-powerful route has its draws, but I like small sizes... I'm looking at a good 100% premium for way-more-powerful in my favored form factors. (Saw an 11.1" Vaio today, gorgeous with great KB, the 12.1" HP next to it was about $1300 cheaper for better specs. Dang.) A UMPC with a decent processor with good FP and graphics performance would do me just fine.
As for power vs. weight, that's a game I've been playing for over a decade, now. I'll gladly take an extra 0.5 pounds to grab a couple extra hours of battery life or balance out a more powerful processor. I'd just prefer not to.
Really, the Pepper Pad 3 is looking quite awesome at the moment. I've got to try one out. I suppose I could probably grab one for a bit under market on Ebay. If the Geode is so powerful, I really don't see an issue with picking one up even at MSRP.
Edit: Great googly moogly! I can get a new Pepper Pad 3 for $399?
I'll definitely look into the "find one with a broken screen" option. Good suggestion.
Thanks!