So...here's my experiences with the receivers; take it with a grain of salt.
Orange - I've had middling success with them. Their early, DSM2 receivers, I had problems with. They would cut in and out constantly on me, or I'd get jittering servos doing range checks. I figured they were just cheaply made (and considering I'd gotten them for $5/receiver from an HK closeout), and just moved on to the DSMX ones. The DSMX versions I've flown with much better success - in fact, I've got one that's been through a couple of crashes via Combat, and the case blew off in one impact, leaving it as a naked receiver. No issues whatsoever there with that one.
Lemon - I've been running it in my Nano Goblin since day one, a 6 channel receiver that ran me about $15 when I bought it from ReadyMade RC a few years ago, and it's been going strong. I'm fairly impressed with it, having flown the plane several hundred feet away from me and having it stay rock solid the entire time.
Spektrum - I had ONE problem with any of my Spektrum receivers, and I don't blame Spektrum at all for it. The receiver I had an issue with was in my quadcopter, and was a satellite receiver that hooked into the FC. I had crashed and broke some props, and snapped the antenna mounts in the crash. I didn't think too much of the antennas, because they didn't look damaged, but when I started flying again, I had loss of control while flying and it went down after about 50-60 ft out from me. When I recovered the quad from the 2nd crash, I noticed that one of the antenna wires had actually been cut and damaged from the initial crash, and most likely was causing poor reception. I bought some new antenna wires, popped open the case, swapped them out, and put it back together; quad instantly had better reception.
I've recently bought 2 of the antenna-less 4 channel Spektrum receivers with the Bind button on it, and they've been rock solid for me - one in a balsa Gentle Lady that I've been sloping with, and one in a Baby Blender, which has yet to maiden (I was planning to test it this weekend, but when trying to take off, I had a sputter on the motor and lost power as it was taxiing the runway for takeoff - looks like one of the mounting screws I had was a little longer than the others and did some damage to the winding inside, so it wasn't getting full power. Swapped out for a new motor when I got it home and she'll be ready for testing this coming weekend, hopefully!)