I've been doing a lot of drum tracking over the last couple of years; I'm still no expert but I've learned a couple of things re: editing.
My first rule is to always use a click. Sometimes people resist it, because they are such creative flowers <g>, but it's worth insisting. On top of that, if the drums are getting recorded by themselves (as opposed to a rhythm section all at once), I'll first create a simple, solid bass and guitar (or bass and piano) track that is lined up perfectly with the click, and let the drummer record to that along with the click.
I have never had any success using the wholesale quantizing tools with drums. Perhaps it's my incompetence, but I always get unsatisfactory results that way. That applies especially to AudioSnap, but cutting the clips at transients and quantizing clip start times isn't reliable for me either, IF I try to do most or all of the drum track at one time.
Instead, I listen to the drums along with the scratch tracks and only fix them when I hear a problem. If something needs fixing, it's usually easier for me to split and realign tracks (using Selection Grouping), as opposed to digging into other takes looking for a better performance. I'm a huge fan of comping for vocals and other instruments, but it doesn't help me much with drums. Maybe this is partly because the drummer I usually work with is very good, but I also found that take selection wasn't too helpful when editing my own drumming (which is not very good).