RE: sig vs balsa usa 1/4 cub kit?
Both Sig and BUSA 1/4 kits are nice, the lines are more scale on the BUSA, and it lends itself better to mods.
I have an older 1/4 scale BUSA J-3 kit available, as well as a set of BUSA's L-4 plans, and a set of Robart scale gear, and a dummy engine kit. Also have a GP float kit that will work with this plane. Anybody interested, let me know, I'll make a good price.