Am I the only one that still uses Promash these days?
Nope. I'm willing to give Beersmith 2.0 a try but haven't done it yet. In the past, I found it to be cluttered with features I didn't need or with dubious value (FG predictions). ProMash and Kai's water spreadsheet do everything I need to do with a better interface for me. Right now I'm not lacking anything.
I met Brad at NHC and he was a really nice guy, though.
Also, in response to jeffy, you can run ProMash easily on a Mac using wine, even using your PC installation if you have that hard drive mounted. I hear Beersmith 2.0 fails though, but there is a Mac version.