Hi
Most of the suggestions are ARFs and they are sure good flyers. I am a builder so I would suggest one of the kits that would give a fine plane that you can custom to fit your needs and set the appearance just like you want it.
Lots of choices for the da 50r. Carden makes the Cuda that is top of the line. CA models makes a couple of fine planes ( that is Columbo Anderson's company) and there are others. Some you can put together no matter what your background and having a pro do it will give you the exact plane you want and a long life span (as long as the dumthum leaves you alone).
some thoughts ----
www.dream-rc-airplanes.com