I assume you are talking about a cat trip, or some sort of power assisted backcountry riding?
area has a pretty good cat accessed area. It's enough off the path that earn your turns guys like me don't really go back there. I've really seen nothing but good reviews from people who have gone there.
Steamboat Powder cats
is another good operation. They operate on Buffalo Pass and that place just gets pounded with snow. Where Steamboat Ski mountain gets around 400" annually, Buffalo Pass consistently gets around 800". Bring your snorkel. Sled skiers/riders are also up there, so there is some competition.
San Juan Snowcat Skiing
is another operation you might look at. They have a huge expanse of terrain and no competition. The snowcat leaves from the top of Purgatory mountain (Durango Mountain) and your adventure starts from there. I believe they have over 30,000 acres to ride (6 Vail Ski areas...).
There are plenty of other snowcat operations in other states. Utah, Washington, California, Nevada, Idaho, Wyoming, all have worthy operations. I am just not as familar with them as Colorado based ones.
Expect to pay around $300 for a day at any of these operations. Some may offer packages for multiple days, it depends on where they operate. I would also check what level of avalanche education their guides have acheived. The main guy should be level III certified and I would expect the lead guides to be at least level II. Remember this is not controlled terrain, avalanches are a very real possibility. You want to avoid them at all costs. Your guides should have the skills to make sound decisions and avoid that hazard. If you get buried, there is good chance you will get killed in the process. If you don't get killed, and are dug out quickly by a beacon search, you will most likely be all sorts of busted up. Broken arms, legs, hips, internal bleeding etc. It's not a pretty thing. All the operations I've listed have a good safety record and good guides. Keep that in mind.