'Light' is not a term to describe the bike. I could certainly put more modern components on it, but it's a) classic and b) came complete so I didn't hafta buy none of that stuff. From what I understand from the guy I bought it from (the second owner), it's a custom frame that was built for someone from National Geographic who toured Japan on it. I suppose I'd describe it as 'confident', if that makes any sense - it feels very stable. The tubular front gives a nice ride. Still need some service on it, I think - I can sometimes detect a slight knock in the bottom bracket, although I don't feel it when I pull on the crank arms with the bike stationary. I believe the hubs need some fresh grease as well, I slow down a little faster than expected when coasting.
Mostly D-A EX, with the exception of the seatpost (Suntour Superbe) and the headset (600). Rear wheel is a Mavic MA2, front is an Araya Gold. Bars are Nitto, I believe. Saddle is a Turbo. Came with some SR pedals but the bearings need replacement, so I put a set of Sakaes that I had on there for now.