My vote goes for the BTR Stage 3 cam if you're planning on running a long runner intake such as a stock LS3 or FAST intake manifold. It's a proven performer that is still very streetable, and should pull all the way to 7k easily.
Martin's cam looks a little strange given the conversations we had last year when I was researching the right cam for my L92 headed 6.0. Unless he's changed his mind he tends to like a little longer duration split for the rectangle port heads, and appears to be geared more toward a short runner intake such as the Victor Jr, either carb or 4bbl efi. I would expect to see those specs for a carb'd ls2. As an example the cam specs for my carbed motor are 231/246, .615/.617, 110+3.
The first TSP cam would be my second choice out of what you listed, but unless things have changed since they spec'd my cam (it was a tossup between Martin and TSP) the exhaust duration is a little short. I would ask about this from whoever you decide to buy your cam.
And finally Comp. That's the same cam they spec'd for my carb'd build. It would be nice upgrade for a daily driver that plans to run 100k miles, but not optimum for performance.
