RE: Second plane...should I do it?
The Flyboy 50 is basically a World Models Rambler 45 with a different covering scheme sold under the Wings Maker name. It is an EXCELLENT flying airplane. In fact, it may be my favorite. It flys like it is on a rail and mine hauls a** with a .55-AX and 11x8 prop. The pictures on both the World Models and Wings Maker sites do not do it justice either.
Having said that, it is not a good second plane in my opinion. It is light and lands pretty gently but it has a pretty fast roll rate and can be a little sensitive if the throws are set too high. Also, retracts are something a new pilot doesn't need to hassle with (same goes for flaps if you ask me).
The list RCKen put together is pretty good. It's based on experience from him and a lot of other people. Hopefully the GP Cherokee can be added to the list someday. I imagine there will be some feedback and possibly an RCU review soon (I'll volunteer...). Sure, some of the planes listed might not be the most attractive but that beautiful scale project should probably be saved for a time when a pilot has more flight experience. That's just how I see it anyhow. I know others may disagree.