Ok here is my opinions, as a Spectrum non believer (had to many issues in my club with it, but my modded Devo 7e works wonders with DSM2 if you fly close even with the Hobby king micro RX) The downside with Spectrum as I see it is the range, going FPV you're going to need a good TX(transmitter) & good RX(receiver). We have a congested 2.4Ghz area at our field with a black hole to the south of the airfield, so many lesser RX will brown out in that particular area, the only ones that works flawlessly is (in no particular order)
- Futaba original RX
- Frsky with original RX
- Flysky with the "bigger" iA6B RX and the new protocol, older Flysky suffers the same
- Graupner
You have two ways to go.
Go cheap and learn to flash your radio.
(You can start out without flashing to learn the radio)
Flysky FS-i6 with a modded 10ch firmware. $50 from Banggood including a FS-iA6b RX. Spares for it? No, but cheap enough to buy another as a spare.
RX is
really cheap about $10 for the RX with support for telemetry.
Easy to program for most things, but it has "only" three mixes. If you're going to fly FPV quad or FPV planes you can do the rest of the programming on the flight-controller.
Pony up some more money and get a FrSky Taranis.
About $250 for the radio with one RX.
This radio can do almost anything you like, support modules and runs OpenTX. But it's not easy to learn to program it even if there's plenty of YouTube videos out there.
$26 to $40 for the original RXs and $11 and up for third parties. With the module system on the TX you can use other systems.
Other than that I like the Graupner system, it's not cheap (TX,RX + ESC) but have excellent programming features, even on the six channel versions.
This is only my
personal opinions and other will have different ones. Read all of them and decide for yourself.