Sanderxpander
For those complaining about a "beating" effect with AudioSnap, it sounds like you need to bounce to clip. AudioSnap uses a lower resolution "live" algorithm until you bounce down. Melodyne uses the same one for both and as a result is more CPU intensive.
As much as I like Melodyne I would never use it for multitrack drum correction. Perhaps the standalone studio version could do this properly but if you go track by track you'll inevitably get flams. Using AudioSnap, you can select the same hit with multiple transient markers on each track (make sure they're placed correctly) and then move them together. This keeps the close mics in sync with the overheads and room mics. Google a bit on working with transient markers. AudioSnap could use a lot of improvement but for multitrack drum editing it beats the crap out of Melodyne.
hmm, this thread is great and has given me much to think about. i guess the best (and most obvious) option would be for me to try both melodyne and audio snap to see which best suits individual situations/mixes. thanks for offering this perspective/info, sander...