Alpengeist has an incredible first, and then it just dies. I think the first half is enough to carry it as a VERY good ride, but it stops it bursting uninvited into the "awesome" category, if we're being objective.
What makes Alpengeist interesting is it's height and speed, and that those elements set it apart drastically from every other B&M invert I've been on. It batters you with wind like you'd expect on an out and back hyper coaster, and it's an exhilarating experience despite the severe lack of force. Big B&Ms just aren't forceful, but Alpengeist makes up for it with that incredible sense of speed.
I just think it's good fun. Well, the first half is. That cobra roll, which seems to receive a lot of acclaim, is absolutely brutal! It destroys the sense of flow by whipping around at an awkward speed, making it feel like they aren't drawn out enough.
Montu is, I think, my favourite... I have a thing for batwings, and Montu provided the right amount of fun, force and length. It's so hard to judge them and they are all pretty samey, which is why I think Alpengeist deserves a little more praise, as does Great Bear. It's a shame that whilst Nemesis gets a lot of praise for being weird, those two get neglected. Yeeeeeah they have dead spots, yeeeeeah they aren't forceful, but since when does that matter if the ride is just good fun?