RE: Who builds high quality ARFs
-Great Planes/Top-Flite
-Hangar-9
-World Models
-Aeroworks
-World Models
-Sig
-OMP
-Extreme Flight
-Many others
Even some of the "no name", low-cost ARF's are built very well but you'll have to give up a a little in hardware, instructions and support.
What types of airplanes are you looking for?