to chime in.
most of the new gen recorders write to some format of flash media (and not hard drives). No moving parts. unlimited potential (multiple chips)...and the whole no moving parts thing means no wear, no maintenance, no serious battery drains.
the only HDD recorders out there, in production right now are the SD 722/744 and the Edirol R4.
There is also the Korg MR1000 and MR1 , which are both hdd based recorders (and DSD format).
there are others, but these are the main players that cost under $10k.
I dont know of many dedicated 16bit recorders out there these days, sans a few Marantz models, and as mentioned the 24bit world is much more "friendly" for live recording and can certainly yield superior results.
the bummer w/all the new recording gear out there is that none of the less expensive "pocket" style recorders have a digital input (should you require one). the exception here is the M-Audio MT2496. But the jury is still out on this 2nd revision of the product.
the good news is that the analog front ends (especially the line inputs) are very acceptable, and trump the circuitry of the older DAT decks. Seldom are these little decks brickwalled or screwed up by hot signals that they cant take.