if you are working in a call center, you know the ranking is:
TMobile : Sprint
T-Mobile is either really good or horrible. Sometimes when I get 2 bars (around -120 dBm to -110 dBm) my speeds are horribly slow under 2 Mbps download and upload speeds. Other times when I have great signal around -70 dBm I get 80 Mbps down and 20 Mbps up
I don't care what T-Mobile won. They have no service where I am and Verizon does. I really wish someone could give Verizon some competition but they definitely have the best coverage.
I would rather have unlimited data than slightly faster connection. And T Mobile should also invest into its home country Germany as they are falling behind a little bit while keeping the prices high