LTE speed is great, but HSPA+ is pretty damn good too. The big kicker against HSPA+ is that it's not as pervasive as LTE (or perhaps T-Mobile just isn't as pervasive as Verizon), so while I've gotten really fast speed (+- 60Mbps) on HSPA+, it's usually much more pedestrian.
That said, I'm seldom downloading large files to my phone, and even 1 or 2 Mbps burst is usually fine for the way I use my phone.
That said, I'm seldom downloading large files to my phone, and even 1 or 2 Mbps burst is usually fine for the way I use my phone.