Like you said, you're going to need at least 8 inputs if you want to record a drum set. 8 is enough for a drum set, but you will always want more.
I'm not positive, but I think both the 1010 and the Layla offer 8 analog ins and a digital input, which you can buy a A/D converter for if you want 8 more analog inputs. I know the Layla can record all inputs at once, giving you a maximum of 16 inputs. I'm not sure if the 1010 can record all inputs at the same time, though.
However, the Layla costs $800. If you look around and find the lowest price on the 2408 and ask Zzounds to beat it (to get the free shipping), you'll be spending around $800 on the 2408. I think the 2408 is the way to go as far as those two are concerned. Plus, the 2408 can be upgraded to 72 tracks.
Again, I'm not positive, but I'm pretty sure all of these cards offer 24-bit inputs.
I don't know as much about the 1010, except that it is only about $600. I would look into the 1010 some more. If it can handle 16 inputs at once, maybe that's your best option.