Normally, I would recommend a club, an instructor, and a simple glow-powered trainer, but this is a special situation and is an apples and oranges comparision. As noted, the Aerobird Extreme is an electric park flyer. So is the Parkzone Mustang. I can't say for sure without having actually flown the Parkzone plane, but it is highly likely that this particular Mustang is no harder to fly than a glow trainer. For one thing, it is a parkflyer with a reasonably low wingloading(I have to guess at this because only wingspan and weight are given), second, its only 3-channel(aileron, elevator, throttle). This is not a barn-burning heavyweight scale model with flaps, retracts, and the works. If an instructor is not available and there is no local flying club, I would recommend to stick to lightweight, smaller models to learn on. The Mustang should be under two pounds ready to fly and probably won't break 35mph in level flight; compare that to the Alpha at about 5 pounds and likely capable of over 50mph. The Alpha may be more docile overall, but it's faster, heavier, and really shouldn't be flown without experienced help. The Parkzone Mustang is a bit of an unknown as it's not yet available, but between the two, in your case I think it's the better bet. Better yet, if you're stuck on an RTF, look into the Parkzone Stryker. It would be a good intermediate trainer, speaking from experience. It can tear up pretty well, but it's well mannered and easy to fly. It's a little smaller and lighter than the Mustang, and will probably "bounce" better when you crash. If you're willing to consider ARFs or kits, there are LOTS of possibilities, just ask.