I like my 4G from Clear. They do have service in Denver area just check their coverage map on their web site to make sure your neighborhood is covered.

They don't band limit you once you hit some magic number. Rate is pretty good in Portland Or.

I refused to use Comcast just for the reason you mentioned. Not even a telephone service. We use VoIP with Clear 4G. On rare occasion our VoIP gets bit garbly but I think its because we have two VoIP service on the same network in my house. My partner has her VoIP and I have mine. Ooma based VoIP. We've been pretty happy. One time fee and free ever since.

smilingcat