They are both capable of similar if not the same speed with the telemetry receivers, but the main issue I had shelling out for the 4PLS at this time is that the antenna is no longer available as a spare part, and the radio is now about 5 years old, which means more than likely that is due to be replaced very soon. From all accounts its a fine radio, but I wouldn't feel comfortable buying one with those two caveats. Just my 2 cents.

The Sanwa MTS is super fast, and receivers capable of the fastest speeds(RX-380) are only about $10 more than the Futaba receivers if you look around. You can also get the radio bundled with two of the $100ea. RX-482 receivers from RCmart if you're willing to forgo US warranty service.