@sluggo72's point about COVID is valid. I knew a guy that was at Vail on a ski trip when all the ski resorts were shut down due to COVID.
Breck is nice, but I found that it gets pretty crowded, and it's very popular with the younger crowd. You pay a good deal to stay close to Breck, and I didn't think the skiing was all that exceptional.
My advice would be to VRBO or AirBNB a place in Frisco, CO. You can then go to Vail one day (I'd go more, especially if you can handle the back bowls), Beaver Creek one day, and Breck one day. You'll pay a lot in lift fees, and you wouldn't be renting equipment at any particular resort (there are a few places in Frisco that offer equipment rental -- just make sure you either get a vehicle that has bars on it and you bring along ropes/bungies/etc., or get a temporary rack when you rent a car in Denver).
The I-70 issue that
@PSUSignore raised is legit, and I've experienced issues with it on several trips, but you kind of have to monitor things and adjust on the fly. I-70 does get closed down in big storms, so monitor the weather and plan which day you're going to which of the aforementioned resorts, and also monitor the weather for when to leave when you're retuning to Denver.
Copper Mt. is also in the area, but I've never skied it so I can't offer any type of thoughts about it.
Have fun.