I am thinking about ordering an X10S but I am not sure what receivers to get for:
Twisted Hobbies Crack Yak Lite
Twisted Hobbies Crack Yak Mini
Extreme Flight 48" MXS-EXP
Lynx Oxy 2 Helicopter.
There is no need to pay for options I dont need and there seems to be a lot of choices. Of course saving weight is always good. The cheaper the better too

The foamies are close range and just run small knock off 4 channel receivers now. The balsa extreme flight will go out a little further and will hurt more if it crashes. I am not sure if it needs something better than the foamies or not.
I have no clue on the Heli. I dont have this yet, but I am planning to build one soon.