Just looked up the Black Label V3. I'd get that one in a heartbeat. In purple.

I've ridden fixed-gear bikes (and high-end road bikes) since the 1960's, and my all-time favorite bike is a Specialzed Langster.

The Langster has a double-butted aluminum frame and fork, with road bike geometry. The Black Label has a carbon fork, so it's even lighter, but otherwise it likely rides the same as mine. Specialized dropped the aluminum version of the Langster years ago, so if I had to replace it, I wouldn't hesitate to get the 6061 Black Label.

I paid about the same for the Langster when it came out in 2006 as the 6061 Black label costs now. With the upgrade to the carbon fork, that's an insanely good deal.

Editing to add:

When I got the Langster, I immediately installed bullhorn bars (much better than drop bars for climbing and accelerating), time-trial brake levers (for the bullhorns), and bolt-on aero bars. I strongly recommend all three changes, although the aero bars aren't absolutely necessary. I do a lot of rides of 3 to 4 hours on the Langster, and the aero bars help a lot.