@kitchener, I would read the
whole thread. I'd also use the search function.
You're going to get a range of opinions. Such as Snowmass is better skiing than Aspen Mtn {Ajax}. Or Snowmass has better "après".
I have family in Aspen, and have had family there for 50+ years. So, we do have some local knowledge. Personally, if I were vacationing there, where I would stay is entirely based on how much you are willing to spend. We stay with family and friends, either in "the core" of downtown Aspen, or in Old Snowmass {not the ski base}. I would say in Aspen, as close to Ajax as my budget allowed. My wife and I love walking the "city", grabbing a coffee after skiing, etc. We are not into après as a sport. In fact I'm trying to remember when lines like "Where is the best place to après? " actually entered ski vocabulary. If I were to stay in the core, I'd cook in some nights, and eat out others. You can find anything for food. Burgers on up.
If my group included families with small kids, I WOULD stay at Snowmass. If the kids were older and strong skiers, I'd probably stay downtown, as for me, that is the real Aspen. I hear of families who spent an entire week at Snowmass, and had a GREAT time. But they really didn't spend a week in Aspen.
Yes, Aspen CAN cost a fortune, but it does not need to. I've posted on that, here, before. The public trans system is great, and there are "a lot" of Uber cars.
I prefer the skiing at Highlands and Ajax to Snowmass. But, all four mountains are fun skiing....including Buttermilk. These days we often skin up Buttermilk at sunrise or sunset. Lots of fun. Our daughter then heads to work at Highlands.
Hard to go wrong anywhere, and I'm offering a different opinion. If you do stay at the base of Ajax, it will be significantly more expensive than staying out at Snowmass. Either way, I'd start with Airbnb, VRBO, etc. You can find some deals. But get on it NOW.
Have fun.