crazepony on amazon. one came with the camera and they sell 3-packs of other colors/clear

I got FrSky, it's really great. i've been 10m thru walls, upstairs and it's fine. It had some other 'just fall out the sky' issues, some only lasting long enough to tumble a little and then recover. Only had it 2 days now, so knock-on-wood

Sounds like you got a good one then. I heard the DSM2 version is more problematic. I've got a Beebrain coming, so hopefully that'll do the trick!