But is the no coverage thing really mint mobiles fault or due to the fact the major network backbone provider they piggyback on (tmobile) had no coverage where you were? In other words, if wou were a "first class" regular Tmobile subscriber, would your service in that same location have been any better?

All these smaller mvno lower cost providers are piggybacking on either Verizon, Tmobile, or AT&T. I would expect that your service and coverage is going to be largely dictated by which one(s) of those guys they piggyback on more than anything else, am i right or wrong?