In the past month I've created two hackintoshes, an IBM lenovo s10 and a Dell mini9. Since the mini9 model has been removed from Dell's store, there's no reason to fully compare them. But I will say that it was a hell of a lot easier to hack the mini9 (read: run a few pre-made scripts from the interwebs), then it was to get the same result by hand on the s10.

Quick thoughts:

Mini9 downsides: 64 gig harddrive, no F-keys, small keyboard, an annoyingly stubborn trackpad and a shoddier case (not a bad case, just nowhere near the tank armor that IBM supplies).

S10 downsides: weight, low quality speakers and hardware/software issues (camera only works with some apps, no ethernet, screen wake after sleep has it's snags).

Bigger fan of the S10 (how often do you use ethernet on a laptop?) mainly because of the keyboard, trackpad and the harddrive size (it may be a netbook, but I still want 160 gigs of music and movies).