Selle Italia SLR. The most comfortable saddle I have ever owned. I've gone through about a dozen until I got an SLR used. It was odd because the first two days, I found the saddle to be so thin and uncomfortable and then after that it was like a light switched on -- it's the most comfortable saddle ever.

I've tried a few Brooks saddled and found them immediately comfortable and similar in feel to my SLR.

It seems odd to get a saddle that has minimal to no padding at all (SLR has barely any and the Brooks is just the leather) and yet both are stunningly comfortable. I've done two metric centuries and feel no numbness in the nether regions with the SLR. Compared to the Flite I used to have which felt like an ass hatchet (or rather like I was sitting on a broomstick/pole all day) or the Selle San Marco Aspide Arrowhead which also was surprisingly harsh.