Mark, the subtle detail missing is WHY you did not like Snowbird. I will admit, I have never skied Snowbird but Alta, went there once in January with my son, and have been back for a total of 3 times now in 2010.
I would say you should go BACK TO Utah and ski Deer Valley, its fantastic for intermediates and advanced intermediates, really big, wide and LONG runs, and many if not most groomed very well, plus the service is generally pretty good. Alta is good too, but like Snowbird it takes one to handle ungroomed terrain to enjoy Alta. Alta and Snowbird are BIG mountains if one is beginning to really rip it, but in terms of scale are actually quite small in terms of the length of any ONE run.
Jackson Hole gets a lot of press but you should check with the uber-guru of Epic Ski and skiing in North America in general, Bob Peters, he is a JH resident. With the disclaimer of never having skied there, just reading about it suggests, I would have to be pretty motivated to go there, mountain is not that big, and with the exception of all the brou-haha about Corbet's Couloir, where the entry jump is the big deal, an at my vintage, that has ZERO appeal, it seems like a pretty mediocre place.
For sheer breadth of skiing terrain, Little Cottonwood Canyon (Alta/Snowbird), Big Cottonwood Canyon (Solitude/Brighton) and Deer Valley in my view CANNOT be beaten in North America.
Forget Colorado, its a nightmare to "get in" and "get out"
Note Utah is NOT cheap, regardless of what you read unless you are willing to live like a 17 year old kid on the move.