Finally up and running ... had to call T-Mobile Customer Service and Politely but Forcefully REQUEST a NEW SIM card that would fit the NEXUS 5, as the old SIM I had was standard sized.
Otherwise just going into a T-Mobile store to get one I read online that they will try to charge you $20 for a new SIM card, was told the same at first by CS Rep w/ T-Mobile until I said ...
"Ummm, HELL NO, I don't think you want me taking my service elsewhere over a SIM card do you ?" and they said go in to Store and have them call, we'll have a Free one on hold for you.
Anyways, BAM ! 4G LTE right there in store, with 29.45 Dwn / 15.06 Up / 41 Ping results
... closer to Home it's 31.34 Dwn / 16.21 Up / 36 Ping results
still nice, however SOME spots around town while driving, NO 4G LTE, but still decent T-Mobile 3G/4G HSPA+ with 11.96 Dwn / 5.44 Up / 46 Ping results.
HOW are you guys posting screen shots of your phones screen again ?
Hopefully the results get even better in time as T-Mobile Invests more $$ into 4G LTE and Expanding Coverage towers across the US. All in All can't complain for $30/month.