The Sig Somethin Extra is a great building second airplane. There are a ton of posts here regarding this plane and several build threads too. I wouldn't hesitate to build another of these ... laser cut goodness, I tell you.

BTW, RCKen did a magnificant job documenting the build of a Trainer plane (Sig LT-40) over the course of several months. I'd highly recommend checking out that thread (do a search) - even a seasoned builder can learn a thing or two from that build thread.

-MA