Hi to help you decide have a look at the video at man in seat 61
http://www.seat61.com/railjet.htm#Ra...e_Arlberg_Pass

Have done the trip from Innsbruck to Basel and I belive it is one of the best in Europe and on one of the best trains Railjet. If you know your date has Togo has suggested and book early enough you can get some great Fares.

Basset