When you find a saddle you like, buy several of them. For me, the Avocet Racing II was a great fit. When those disappeared I switched to Sella Italia Turbo saddles. Even when Sella Italia quit making the original model I was able to scavenge lightly-used ones and even found a new-old-stock saddle still in a box. Then Sella Italia reintroduced the "Turbo 1980." I bought one.
After only two years, the Turbo 1980 looks like this:
This return to real leather is the end of a research program lasting years. I've almost bought a Brooks several times. Two things kept me from going ahead with it: the weight and the care of the leather itself. At this point I can't claim to care a whole lot about bike weight, with rack, fenders, generator hub and lights. So I'll undertake the care of the leather.
After exhaustive study of the Brooks catalog I narrowed it down to the Team Pro, the Swift and maybe the B17 Narrow. I kept glancing past the Colt. But then I checked the dimensions more carefully on the Brooks site and decided it sounded like a good transition from the saddles I had used before. It's a few millimeters wider than the Turbo/Avocet, but not wide enough to cause problems. A saddle that's too wide for your bone structure will just push you forward onto the narrow part of itself. So choose wisely.
The saddle just went on the bike today, so I have not ridden more than a few yards on it. We'll see how the notorious break-in goes. Some people have a very easy time. Others willingly suffer to achieve the personalized fit for which fine leather saddles are known. Then there are the riders who run as fast and as far as they can to get away from the old leather torture device.