It's worth noting that Sprint is also Virgin Mobile US and Boost Mobile ... which has a fairly large subscriber base and is very oversold. T-Mobile also has a few MVNOs that use their network (I use Simple Mobile)... It seems that AT&T has cut support for most MVNOs using their network, and Verizon afaik hasn't ever had any.
It's a bit of a race to the bottom in one way, but I never saw the point in paying more for AT&T or Verizon. At home I get very good coverage... the only time I'd rather have Verizon is on my annual road trip, and that's only a week or two. If you're in the northern us (Wyoming, Montana, Dakotas etc), Verizon is pretty much your only option.
It's a bit of a race to the bottom in one way, but I never saw the point in paying more for AT&T or Verizon. At home I get very good coverage... the only time I'd rather have Verizon is on my annual road trip, and that's only a week or two. If you're in the northern us (Wyoming, Montana, Dakotas etc), Verizon is pretty much your only option.