I just returned from the IMAC Nationals.
As of Saturday, the two leading planes in the unlimited catagory were ARF's. A guy from Arizona flying a Radiocraft Extra 40% and Mike McConnville flying a new 40% Biplane.
So I guess builders are needed when you want to have something unique, but as far as quality and capability, ARF's have arrived!!!
......wait...... let me get my flame suit on!!! ....