Can't go wrong with Futaba or Sanwa... I would recommend creating a spreadsheet to list out the most important features that are important to you and cross reference each selection as you narrow down what works best for you.

For me the Graupner X-8N was the best choice and I have no regrets:
Graupner X-8N 4-Channel HoTT System | TowerHobbies.com

The biggest selling point was reasonably priced telemetry Rx's and 2 year warranty with a USA based service center:
Graupner GR-4 2-Channel HoTT Telemetry Receiver | TowerHobbies.com

I have owned a couple other luxury systems in the past where both Radiopost and KO Propo have left me disappointed