The Skinny on Narrow Brooks Saddles?

I did not think this would happen to me in a million years, but the Brooks B17 saddle that is so blissfully comfortable on my touring bike - is now apparently too wide for me on my fixed gear roadbike. I kept lowering the handlebars on that bike (isn't it funny how our ideas of "what feels comfortable" can change?), until they've become considerably lower than the saddle. As a result, parts of my inner/rear thighs have begun to press into the hard edges of the saddle uncomfortably as I pedal. This never used to happen when the handlebars were up higher, so "saddle too wide" seems like a reasonable diagnosis.  Just when I thought that the B17 was my "perfect" default saddle for roadbikes, I guess I am proven wrong. 

I am completely lost when it comes to choosing a narrow saddle, and the Brooks classification system is not helpful. Even examining them all side by side (at Harris Cyclery) was more confusing than informative. Left to right, these are: the Swift, the Pro, the Colt, and the Swallow. I imagine the box of kleenex on the left is for clean-up, lest customers drool on the saddles. Or cry about not being able to afford them.

More frustrating still, is the fact that, once you get into the narrower-than-B17 territory, nobody seems to agree about what's comfortable. Some say that they ride the Brooks Pro exclusively and love it. Others say that the Brooks Pro is "unrideable". Reviews of the Swift and the Swallow are equally mixed. From what I read, I am beginning to think that as a lighter cyclist (125lb) I may find it especially difficult to deal with these saddles, as they tend to be harder to break in.

One model I am considering is the new (re-released) Colt. The width is similar to the Pro, but the nose is pointed down, like on these 80s racing saddles. I have tried a couple of the old vinyl and foam saddles in that style, and found their shape surprisingly comfortable (though not the material they are made of). I am not sure what the actual purpose of the downpointed nose is, but it sure is female-anatomy-friendly, which is why I am considering it. The Brooks Colt has been out for a few months, but I have not found any substantial reviews of it. The hard-as-a-rock surface does give me pause.

While Brooks saddles are fantastic when you find the right one, they are just too expensive for me to experiment with. I am open to other brands as well, though in my experience I don't do well with anything other than suspended leather. Maybe some of the imitation-Brooks that people consider "flimsy" might actually work for me, since they break in faster. Any suggestions - keeping my weight in mind - would be much appreciated.