My only beef about ARF/RTF is that it has hit the kit market in such a way that kit manufacturers stopped making a lot of the kits, and some have totally disappeared. Being able to slap the wings on, the tail, and pop the gear into it is one thing if you have a need to get flying quickly, but when it comes time when there are fewer flying days and more building days, it is nice to be able to work on a stick build instead.
I still have an extra .52 4 stroke that needs a plane, but have not found one that I like. I did see a SIG Citabria, and may consider getting one of those for the OS, or Magnum, depends on if I want the OS on my Kadet, I had wrecked the Kadet 2 weeks ago, and rebuilt it, but couldn't find a replacement motor mount for the OS, but my Magnum which was on my other plane has the same mount and actually fit perfect on the Kadet, so I have it on there now. A few flights will tell me if it will work.
What I found out about the Magnum, they start soo easy! A back flip and its running. My OS, I need a starter on it to get it running, first run or last run of the day, it will not start by hand. It runs great though.