Well I haven't flown either but let me tell you my experience so far. I'm in the process of just finishing up a GP Spectra. It's been a real pain in the butt. My problem is I research and find out about all the upgrades that can be done and before I know it, I'm struggling with the upgrades before I even fly it. I've spent weeks on an off wrestling with the Spectra. To the point I almost trashed it because it was so much a pain. I'm almost past all obstacles in the build and almost done with it. Very recently I ordered the Radian RTF, it's absolutely complete. In the first ten minutes of taking it out of the box I had it assembled just short of all the checks you should do. I think one evening with it will make it ready to fly. When I think back on my purchases, I would have skipped the Spectra and just bought the Radian RTF. It's a high quality foam motor glider, well thought out with really good electronics. For $249 they put together a really well thought out and complete motor glider. I think it's hard to beat.