Hey there! Aspen is the best party ski town in the US. Hands down. You can literally ride down Aspen Mountain right into downtown Aspen, walk across the street and get a drink.
As far as the riding there. Snowmass is huge and has some great terrain up in the Cirque. AMF (adios mother fucker) is the classic chute up there. Generally good snow to be found in that area. That's about all I know of Snowmass, I'm sure some locals can point you to good spots. My favorite mountain there is Aspen Highlands. It's basically a knife ridge (with a big flat sharp end of the knife) with steep terrain falling off of either side. The ridge is where all the intermediate beginner terrain is. Go left or right off the lift and everything goes to 40-45 degrees instantly. It's worth the hike up to Highlands Bowl, especially on a powder day. The further back you go generally the better the powder. I haven't been there since the new lift went in, but lapping it should be way easier.
As far as Aspen goes, it's about a 3 hour drive for me to get there. It can be done, preferably for a weekend. Lift tickets are ridiculous there, but Marble peak has some fantastic looking backcountry I've been itching to hit.
Loveland would be around a 2 hour drive from Aspen. Berthoud or Vail Passes would be the bc spots of choice. For Vail Pass, you'd want at least snow shoes, at Berthoud you can get away with boot packing but snowshoes or a split will let you explore more. Of course you want avy gear. As sketchy as Utah's snow pack is, it's worse in Colorado. I can come by a beacon or two if needed and know both Vail and Berthoud passes well enough that I should be able to keep people out of trouble. Everything you are looking to ride can be found in spades at Bert. Well except for groomers. Pow and trees though, heaping helpings of that...