The orange receivers I know that will failsafe on ALL channels are the r620 and the r800.
Both will work fine with a spektrum TX.

As pointed out by Alex the DX6I is a versatile controller with nice features and I currently use one of them with either of the above mentioned receivers without problems.

I used a DX5e before, but the lack of modelmemory and the limited mixing functions made me move one up.