In the outstanding model shops in Tokyo and Osaka (which seem to have almost everything) I've held many of the Wingnut boxes in my greedy hands. But I can never make myself commit to the price...and know that I don't yet have the building and painting skills needed to do one of these premier kits justice. Way back in 1984 I was passing through Tokyo, when the yen was 215 to the dollar, and bought one of the Hasegawa 1/8 scale museum quality DrI kits for the equivalent of $150. It was amazing. But at the time I had just accepted a teaching position at Kuwait University and knew that I wouldn't be able to commit the time and resources that the kit deserves. The job in Kuwait was followed by university jobs in the Sultanate of Oman, then Mexico, then Japan (where I have been a tenured professor for the last 20 years). Oh, and there were three kids in there somewhere. For most of that time the DrI kit sat underneath the bed in my grandmother's house in California.
Then in 2003-2004 I had a sabbatical which I spent as a visitor scholar at UCLA. During that time I happened to walk into a hobby shop and saw a RC radio set for sale for only $120. Last time I had checked (before heading overseas) radios cost upwards of $800 and I had written off RC modeling as entirely beyond my resources. But for $300 I could get all the radio gear, a basic trainer, and the required field starting equipment. So I pulled out the Hasegawa kit, put it on eBay, and got $600 for it!
I promised myself that I would one day build a museum quality flying DrI to replace it. Several years ago I started work on a somewhat experimental scratch-built DrI at 1/6 scale the goal of which was to see if a model could be both 100% scale (or as close as possible) and still be lightweight...and still fly. I used 3mm bamboo for the fuselage (because steel tubing in these diameters costs an arm and a leg). It's still only in the early stages.
That's entirely functional cross-bracing on the fuselage, by the way, done with 0.6mm music wire.