I've heard good things about that driver: the La Voces are solid performers at a reasonable price (for pro drivers). If you aren't chasing infrasonic frequencies, and will be content with a design that should perform from 30Hz on up, then I think its a solid choice.
If you wanted something with more meat on the bones down low, then going with a Marty might be a better option.
That's a decision you need to make for yourself.
Other than that, it will definitely deliver in the mid-bass area, as that is where these pro drivers really excel.
