I was using Spektrum as well, but not really digging them all that much. I had a friend recommend I try a KO Propo, so I bought the EX-5UR:
http://www.kopropo.com/america/index...=35&Itemid=138
And OMG, HUGE difference in speed and performance. Granted, I was upgrading from a DX3S, but man, just to get use to the KO, I had to dial it back at first and slowly adjust to its speed. At around $190 w/two receivers, it was a better deal than upgrading to the DX3R anyway.
I have since bought the EX-10 and keep the 5 for home use and backup, although it does make it to the track sometimes.
http://www.kopropo.com/america/index...126&Itemid=171
I am slowly selling off all my old Spektrum stuff to local drivers that insist it is the best. Go with what you like I guess, but I would check out a KO before making a major radio purchase.