By FAR, Red Rocks. I have lived in colorado my whole life, been to every venue big and small. Red Rocks tops all. First of all the location, seeing one of your favorite groups in the midst of nature is amazing. Also the "pre-game" in the parking lots in worth the ticket price itself.

I'm sure i'd love red rocks too, but i've never been! my favorite venue is definitely Cervantes in Denver. A lot of excellent, grimy dubstep shows are there. They're not nearly as strict as the fox or beta. it's just all around awesome. fillmore is cool too but they close too early for my tastes.

Red Rocks, nothing beats the sound, atmosphere or view

Definitely Red Rocks. You are surrounded by nature, dancing on a rock, overlooking downtown, with the stars above you, as you listen and dance to your favorite band.

Red Rocks, to be redundant.
But the best venue (and by that I mean the best staff, vibes, and often shows) would have to be Cervantes or the Mish. The mish is really just a smaller version of redrocks with the ability to also play in a river, which is a plus.

Red Rocks...such beautiful natural rock formations, great sound, great bands!

Personally I love the Fox...it's close...BUMPING bass...very intimate setting

I like the fillmore auditorium in denver because it's big and spacious for concerts