This one. The frame is a Cinelli SC from the mid-1960s with a Campy 10sp triple drivetrain. Man of you have seen and heard about this ad nauseum, so I'll link to other threads rather than repeat it all here.

I got the frame in 2017 by trading a 1986 De Rosa frame and fork for it. That story is here. After a Paint-or-don't" inner debate (and asking for thoughts from the collective - that thread is here - I had it repainted in 2020 by Ed Litton. The fork was a redone 1960 one from a different Cinelli, and in 2023, it decided it had had enough. That story is here. So once again, off to Ed Litton - I asked him to clone the old fork, and he did.

So this frame has been through a lot with me and me with it since 2017. I loved the ride on Day 1 and I still do. It was and remains the best riding bike I have ever been on. I am also fortunate enough to have a 1978 Albert Eisentraut and a 1982ish Ron Cooper, and they are great bikes that are a lot of fun to ride. But to me, this Cinelli rides just a little bit better in ways that are hard to quantify.