I'll second that Sig Somethin' Extra. It's a very easy build and very fun to fly. I miss mine(sigh!) Some Sig kits are easy and some are builders kits, depends on the age of the kit and who designed them. Something as common as shear webbing between wing spars on todays kits wasn't even dreamed up on some older kits. You might also consider a Bruce Tharpe Venture 60. Looks a bit like a 4* but better. It's the best kit I've run across so far, really outstanding quality. A pic of my old SSE to push you along