I've had several of the older McCartys, and 4 or 5 with the 57/08s. Both are super-nice pickups, but I prefer the 57/08s and here's why: The 57/08s are both more clear and open/3D, but at the same time have a vintage style thing that drives an amp set clean or "transition between clean and distortion" extremely well.
The 57/08s also seem to respond really well to the volume and tone pots, and since I use those all the time, they're a big improvement (for me).
Of course, none of this means anything without context. I play vintage-style, single channel, PRS amps. Any number of styles, but my favorites are rock and blues, not so much the highest-gain stuff.