I just joined the forum so I'm a little late to this discussion but I'll add my insight.
I live in the U.S. outside of Boston and I've been married to an Austrian from Salzburg for over 25 years so as a result we almost always spend our skiing vacation in Austria and rarely in the Rockies. I'm familiar mostly with the ski areas near Salzburg so that's what I'm going to comment about. Obertauern, Zauchensee, Flachau, Schladming. Altenmarkt is a good base from which to explore all of these resorts.
Skiing in this region of Austria vs. the U.S. is all about the overall atmosphere more than the skiing itself. It's super laid back, very authentic Austrian, never crowded, and significantly cheaper than anything in the U.S. In the 25 years that I've been going there I don't think I've ever bought a full day lift ticket simply because I find myself spending half the day sitting at a mountain hut drinking beer and eating good Austrian mountain food. I have ventured further West on occasion and while the mountains are bigger the experience is not as enjoyable as the resorts become more and more touristy the further west you go.
As for the traveling, I've done it so often that I have it down to a science
Fly into Munich, rent a station wagon (always a station wagon so I can fit the skis easily with part of the seat down), drive the 2 hours, arrive at hotel by lunch time or early afternoon. Go rent skis if needed (my NE skis are no good for the soft Austrian snow), stop at the supermarket for supplies, start skiing next morning
As other posters already mentioned, the skiing is mostly on big wide groomers. I never pay attention to the color of the trails. We can ski anything so the level of difficulty is irrelevant to us. We're there to enjoy it all, on and off the slopes and with such cheap lift tickets that's really easy to do. The locals really love to ski fast. This is the home of Herman Mayer after all. Obertaurn and Zauchensee have off-pist skiing but it's unmarked so you have to know where you're going.