Switching Networks for the 6 -- Reseller Suggestions?

[SteveO]

Sprint basically sucks on my 4s -- excruciatingly slow data in the wild (non-wifi) on their 3g network; calls often don't even ring through, go straight to vm for lack of signal. Don't know if their 4g is any better and don't wish to learn the hard way. I don't want to pay over $50-60 a month. I want unlimited talking and reasonable data (1gb seems reasonable to me as I'm on wifi most of the time). Anyone on a 4g plan that meets this -- and happy with coverage? Looks like T-Mo or a reseller may be my best option. But which one?

I'll probably buy a 6/128 outright. Thanks for any thoughts on what you're happy with on 4g LTE and the price you pay for it.