No problems for me with the XS3. I race three cars with it and so far it's done everything its needed to do. I've recently dropped in futaba 9451 digital servos in all my cars and have switched over to jr's fast frame rate. No more glitches with the graphite cars
Can't go wrong with futaba radios either. I'd compare features and the price of receivers, you'll need same brand if you want to use the radio's fast frame option.