One thing to note: the 15" (at least, dunno about the 17" inchers) are prone to having one of the two RAM slots die, and anecdotal evidence suggests it is *not* a rare issue. I personally had at least half a dozen 15 inchers covering most of the model variants (from 1.33ghz to 1.67, I didn't bother saving any 1.0 or 1.25 Als because they all had bad screens thanks to another bug that inflicted those models) and at least half of them lost a slot. I still have an HR 1.67 lying around I never use, dunno if the problem affects the DDR2 model.

Honestly, I would strongly, strongly suggest you not spend money on one of these things. If the slot goes it'll go with no warning. As noted, they also go completely to hell if they're dropped; they're not QUITE as fragile as the TiBooks, but that's faint praise indeed.