Originally posted by boneplaya
Definitely Intamin. Why? X/X2 might be an amazing first drop, but look at all of the other Arrow/S&S drops out there. They suck. Having one good drop is not enough to overshadow an entire arsenal of bad ones. Intamin, on the other hand, consistently makes fantastic first drops. See: Millennium Force, Maverick, TTD (yes, I'm counting the drop from the top hat here), I305, etc. I don't ever remember being on an Intamin drop that I didn't like.
I will say that a close second is B&M, though. I really do love the newer mega coaster drops.
On the other hand, I just rode Voyage for the first time the other day, and that first drop was incredible (until the jackhammering started, anyway). So GG's up there as well.
The Arrow looper drops are quite good with a lot of airtime in the back. Loch Ness Monster is one of my favorites.