How fast is T-Mobile's network using Galaxy S-II?

With a 42Mbps (HSPA+)  Galaxy S-II phone, real speeds are going to be much lower, depending upon how much bandwidth used on the local network (i.e. space to accommodate congestion).  Still, one expects that the Galaxy S-II would perform pretty good....and it does.  It keeps up, for the most part, with Verizon's LTE.

So there you go...14.38Mbps download.  That's more than twice as fast as WiMax on Sprint, and 6x faster than my home WiMax from Clearwire.  I can live with 14Mbps for a couple of years.