Garywi,

If you want a nice flying third plane, try a Sig Something Extra. The ARF is easy to assemble, is top quality material, and it flys great. Your OS 46FX will do a good job pulling it thru the air. I have built several from kits and three from ARFS. I have not seen a bad one yet. If you fly off grass leave the wheel pants off and use a biggger wheel.

Another nice aeroplane is the Sig 4 Star 40. It too is a tail dragger and aerobatic. Not 3D but standard pattern aerobatics.

Just my $.02 worth.
What ever you get, just fly it and enjoy it.

Flashingred