Speed test for NYC on T-mobile is 15Mbps down and 16.22Mbps up.
One issue on Lollipop is that the preferred network type doesn't stick after reboot. You'd have to re enable it every time you reboot.
I've read the workaround is to flash back to to 4.4, run the LTE enabler, and then flash to lollipop.
Is there another workaround avoiding to flash back to have the network type stick after reboot?