First build was the NA Trojan - This guy in the neighborhood had once owned a novelty/toy store, but it had gone bust in the early 1970s.
He had basically parked all his remaining inventory in his basement and once in a while would let the neighbor kids paw through the stock. He had two 900 series Guillows kits, My buddy got the Mustang and I got the Trojan. Both looked pretty sad and neither flew - but it got me interested.
Second was the Arrow - which almost flew. I put about 5 coats of black dope on it - so it probably weighed 5 pounds. Basically used the whole jar of dope on the thing. It would go about 50 feet before tiring out.
I have probably built most of the 500 and 900 series, several of the larger kits. My all time favorite is the large Airacobra. I really wish Guillows would reissue that kit.