Recently, I bought a World Model's Ultimate 30 biplane from Quantum in KY. One thorough inspection and preassembly of this ARF and I decided to call Quantum to buy another World Model - this time I picked a Super Stunt 40. Both planes are exceptionally well built and the quality of the hardware are first class. There are additional attributes:

1. The Ultimate 30 has enough wing area to go with a 40 and I have put in a light weight Fox 40 ABC.
2. The Super Stunt has over 900 sq in and should really be a 60 size so I have put in a Saito 91.
3. The covering on both planes is so good that the trims matched up perfectly when I put the wings (Super Stunt) together. The Ultimate has both wings prejoined.
4. The attention to very minute details include fishing line in the wings for servo wire, small block of balsa stuck in the fuselage (Ultimate 30) where the tail goes to prevent any chance of damage (you remove the balsa block before putting the tail in), both wing halves are matched resulting in 'better than I can do it with a kit', each plane carries its own serialized wing and fuselage and they ask you to write them in a form and send it in like a warranty card, and the list goes on.

I have decided to buy any future ARF only if it is made by World Model. I still build kits by other makes.