And the 4*60 you dont need to sand?
yes you need to sand it and the difference is that the US60 is balsa and the 4*60 is plywood fuse, balsa sands much easier.

In the 4*60 there are few places too that need head scratching, the US60 pieces are bigger and fewer.
kit built US60 is at least half pound lighter than 4*60.
4*60 buids tail heavy, US60 nose heavy...
Its not that much more sanding on the US60, IMO the US60 wing is easier to sand - less broken ribs...
for me the US60 built much faster.

there are few threads here of the US60 and there are more
http://www.rcuniverse.com/forum/m_6822225/tm.htm
http://www.rcuniverse.com/forum/m_81..._1/key_/tm.htm

Alex