Raced with an Etronix Pulse EX3GPRO 2.4g FHSS Stick Radio System, Indoors and Outdoors.
Never had a problem with range drop out or binding issues. Decent capacitors on the ESC take care of voltage droop.
Use a Lipo tranny battery
Turnigy 2650mAh Transmitter pack and top up charge every 3 or 4 weeks
Some problems can arise from poor connections/shoddy wiring on the car which applies to any setup.
Several club members I have spoken to said they do the business for them and to get anything better is a sizeable chunk of cash.
My only gripe is the manual is a bit sparse in explanation of features.
Regarding feel in use. Nice and light in weight. Sticks lengths can be adjusted to suit. Plenty of feature adjustments and memory store for profiles.
Expensive radio trannys can rotate the stick angles for fine adjustment but not a feature worth paying a packet for club racing.