The Futaba 6EX in 2.4 is the preferred way to go if buying Futaba today. If you can wait a couple of months the new 7C in 2.4 will be out for just a few more dollars and will have many more features in it. Admittedly you don't need these at this time but they will be handy in the future. http://2.4gigahertz.com/systems/futk7000.html
The 7C is http://www2.towerhobbies.com/cgi-bin...&I=LXSEJ8&P=SM $320 from Tower and the 6EX is http://www2.towerhobbies.com/cgi-bin/wti0161p?&I=LZ2640 $297. Not much more for a lot more radio IMO.