Since I have been in the hobby for a day or two now this is how I would tackle "the what to buy" options:
Radio: Spektrum hands down, A huge part of the market has either used or is using specktrum. Most Sims will have Spektrum support natively. If Specktrum does not fit for you then your options are Futaba, Graupner hands down. This first radio wont be the last at ths point but it will be a long haul work horse. If your ready for the plunge and the cost then go with either Jeti or VControl, htese two radios are really advanced and I wuold not recommend them if your just starting out, more so if it is going to be your first radio. All of the radio listed will do all air vehicles with out issue. Some more than others but in the end they will handle an air vehicle.
Sim: Since Spectrum is a fool proof no joke go to I would go with Pheonix or Real flight. Following that I would look at "Next RC" because it is cross platform, meaning it runs on linux and Mac natively out of the box. Again a no brainer if you pass on the first two. Next RC does not really support airplanes. It does however support helicopters and quads (fpv and AV platforms).
gyro: either Ikon or brain, most pilots out at the field will have either used it or is using it. Following that would be (in no particular order)3Digi, Spirit, Skookum, VBar Neo (gyro only model). Out of all of these gyros the Neo will handle all air vehicles depending on what your willing to spend. I am not sure to what limits the other have in regaurds to all air vehicles. My claim on this is on the gyro itself not the RX, really I state this for the quads more than anything. The Neo has an add-on called v-quad which allows you to use the neo as a quad flight controller. I am not sure about the other gyros, most people use beta flight capable boards for a quad gyro.
As for using the REVO for a sim all you may need it the USB dongle that you wire your REVO RX to. Hope I gave you some good info to look at.
