if you go to CU it is the best pass money can buy in my own opinion.
here is my comparison between summit county and eldora:
eldora pros:
it was only $140
eldora is 35 minutes from boulder (meaning you can go to morning classes then ski)
there isnt a lot of traffic most of the time compared to summit county
the mountain is fun
free parking
free bus to the mountain
eldora cons:
icy conditions
windy
not a lot of steep stuff
if you are into terrain parks it sucks
summit county pros:
lots of terrain
everyone goes there so rides are not a problem
better snow
summit county cons:
$400 or something for a pass
traffic there and back
long ass lift lines
everyone goes there
the mountains are flat (not really abasin)
it is 1.5-5 hours away depending on traffic
that being said, i would probably have the epic pass if i was not from aspen and didnt spend my time skiing there for all the breaks. anyone that says eldora sucks and you should go to summit county is either 1) a terrible skier (if you cant shread groomers, bumps, powder, glades then you suck) 2) or they have never actually skied there.
have fun, no matter what it is skiing