T-plug can withstand very high current but not easy to solder becasue the metal strip is inserted to plastic, it will melt the plastic easily in high temperature during soldering.
I use Trax plug, you can solder the metal strip and plug into the plastic plug, and Trax plug can withstand even higher current.
But if XB kit w/o power upgrade, tamiya plug is more than enough, no need to change !
Easy to justify this: you can feel the Tamiya plug is WARM after running, you won't feel the same if you use deans (T) plug. My ESC heat sink also cooler with T-plug.
Perhaps this is because the ESC is a old Novak Hammer PRO (300A), I guess Tamiya TEU-101BK may not deliver this as its current is just 60A. Recall: P=I^2 x R, Tamiya plug have higher R. In high current application the power loss (heat) it introduce is much more pronounced.
Go SSP 昌記電業, 1 pair T-plug $7 with heat shrink tube, should be a better deal than in KWS.