Former EPIC pass holder chiming in.
It's an amazing value when I know I'll have a few weeks to be in DEN/SLC. I'm VERY excited about Stowe being added as I can loop to BUR for very cheap on B6 (under 5,000 miles per leg in some cases). That may pull the trigger for me this season.
Even just 8 days at Vail pays for itself with the extortionate window pricing.
Mountain Collective is too restrictive for my tastes. I love all those mountains (J Hole and the Bird are my favorite spots) but 2 days + a VERY restrictive single-day 50% discount system isn't money well spent in my opinion. Also they have no East Coast mountains aside from Sugarbush which isn't my favorite spot.
The MAX pass looks interesting but most of the local (to me in NYC, so Bellayre, Gore, Windham) mountains are free for me due to working in that industry for a few years. I'd consider it if I knew I was going to be up in Maine/NH more. If you've got a car it's an AMAZING value.
Great to see my fellow snowhounds out and about. This season was one for the record books (and is still going!)