I just went OEM.. it seemed like the least amount of hassle.. I was really surprised by how well the Blizzaks did in the snow, even @ 255/17s. Before last year, I didn't even know they MADE Z Rated snow tires!
Since you're in NJ, I'll throw this out:
http://986forum.com/forums/showthread.php?t=12368 I'm trying to sell my set that I used last winter, and we can meet up somewhere convenient since you're close.