RE: Spectrum receivers
THey work great but a bunch of DX6 users claim to have a problem with one specific Orang RX. I would research it on hobbyking forums or on the reviews on hobbyking. The OranRx receivers work great and at the club I was at they recommend them. Also you need to be careful. Some orange Rx modules are for park fliers but it doesnt state it so the range is not that great. I know some have accidentally put them on a glider and then bam lost signal a few hundred feet out.
also this video is useful
[youtube]http://www.youtube.com/watch?v=xRyOXDGgIh8[/youtube]