Verizons network is 99% lte even if it is slow lte since it was one of the first carriers to have it, days of pulling 60mbps are gone. TMO i prefer because it is less congested so you will pull faster speeds in lte zones and get lower ping. I had a bf who uses tmobiles lte as his home wifi and latency was no issue in mmos whereas in same spot with verizon where I pulled 60/20 with a htc thunderbolt two years ago.... i get 12/4.
Switching also gets you access to free international data & apps like spotify dont use your plan and all plans are unlimited data its just 4G speed caps... 0 overages ever. Magenta plans on converting entire 3g market into lte by end of year I heard so its a solid move. I would do it honestly I have both right now due to parents making me stay on it and tmobile has vastly improved on a monthly basis almost here. If you had asked this two years ago ide of said stay on big red but its not the case anymore.
Never Satisfied With Her Findings....