Linux has always been a problem to me. I have a background in electronics, mostly oriented towards digital/embedded systems, but have always stuck with "small stuff" i.e. microcontrollers like PICs and AVRs that are easy enough to understand the detailed workings of just with the manufacturer's datasheet. My last real experiences with linux (i,e, trying to do more than just install packages and run them with the shortcuts that are automatically placed upon installation) date back easily to about 10 years.
About a year and a half ago, I came across the little ecosystem revolving around the Turnigy/FlySky 9x radio sold for about $50 by Hobbyking. The context is rather silly but interesting: I had found and bought the little E-flite Sbach UMX bind-and-fly airplane I had fallen in love with, and being a Futaba user (still on 35MHz) I needed a radio for it. Of course, my Sbach was to receive the usual mandatory upgrades, i.e. an FPV equipment set with a panning camera (see the related posts for more info). But there came the problem: Those things have built-in Spektrum receivers. To control camera pan, the common solution is to use a headtracker and/or a knob on the radio. A quck search revealed that Spektrum radios are not headtracker friendly, and at that time the first radio in their lineup that featured a rotary knob was the $400 DX8.
Another one of those I just had to get. As a start I love the P-51, and the details look awesome. Price is ridiculously low for such a good RTF EPO model, and all the components are good quality... Hobbyking can really do things at both ends of the spectrum in terms of quality, and this P-51 is certainly on the good one.