While there is nothing wrong with the DX6, for the same money as the DX6 +/- a few bucks, you could get an FrSky Taranis 16-channel transmitter with telemetry. The Taranis firmware is OpenTX, so it is always being updated. It does require a little basic configuration to assign controls to channels, but once you've learned to do that, it won't be long until you want to try some mixes. It has features found in transmitters costing $500-$1000 or more. It also has a JR compatible module bay so that you can use other protocols like Spectrum's DSM2 and DSMX, or FlySky, or UHF, etc. There are plenty of people on the forum that use the Taranis that can help you get started.
So you won't be paying any more that you would with a DX6, but you'll have a transmitter that will last you for years. The down side is that you probably won't want to hand it down to your kids. Prices start at $170. You could always get a Turnigy 9x or 9xr for that at under $100. They can also be flashed with OpenTX as well.