I think a lot of it depends on whether you prefer the shorter inverts, or the bigger ones. I generally prefer the bigger ones, since they're longer, faster, and more reridable, but you can't deny the awesome forcefulness of the smaller, tighter designs.
I haven't been on Montu (rain...) or Patriot but otherwise my favorite is definitely Alpengeist. The interaction with theming and landscaping, combined with the its height, give it a great sensation of speed, and the second half is unlike many other B&M designs in that the focus doesn't seem to be on just getting from one inversion to the next.
I also liked Talon a lot, but it's been a long time since I last rode it. Carowind's Afterburn wasn't especially forceful, but it has a fun, solid layout and the tunnels are nice.