Considering Stuffit version 11.0 crashed on my MBP upon load, this version is is 1000x better, e.g. I can use it. Stuffing works, unstuffing works, all seems well. I still dislike the combining of dropstuff/dropzip into one application -- why mess with us, guys??? -- but it functions, and if I'm making a zip, I'll be using the Finder's "Create Archive" feature, which is faster than anything else.

I did some speed comparisons, the new Stuffit 11.0.2 compared with "old reliable" Stuffit 7, which I've been using with no problems, although it's slow. A 155 mb Windows EXE file was stuffed with both versions on a MacBook Pro. The results

Stuffit 7.0.3 in Rosetta, 8 minutes
Stuffit 11 native, 3 minutes

So from that point of view, it's worth the price of upgrading if, like me, you want to have the "drag to dropstuff and forget about it" ease of use, which includes deleting the original file, which for some reason ever other compression tool out there is shy about doing. I am happy enough.