RE: Ordered (well...pre-orderd) my AngelS Evo 50e
You don't need to go to 6S. I have an Angel S and an Extreme Flight Extra 300 setup with the the Extreme Flight Torque 4014T-570 both using 5S 5000 Lipos and they both have plenty enough power to fly an AMA Masters sequence.
Angel S setup: Torque 4014T-570, Castle HV85 controller, 15X10 APC prop (plane weight right around 6 lbs with 180 flights and counting)
Extreme Flight Extra 300: Torque 4014T-570, Airboss 80 Elite controller, 15X8 APC prop