Quit Obsessing and Get some Advice

I bought new shoes yesterday. Based on my previous injury history I decided that the Asics were no longer going to cut it. So I went shopping for some motion-control/stability shoes that would work with my orthotic inserts. First of all, I'm not the tiniest person around, but it's a little discouraging to be looking at shoes that are marketed at "heavier" runners.

Second, I don't know if I got the right shoes! Now I'm obessesing and I haven't even run a yard in them yet.

So, do any of the RBF members have experience with either:
Brooks Addiction 6
or
New Balance 857?

I went with the Brooks for the sole reason that they didn't have the New Balance shoes in my size. The Brooks are nice b/c they come in narrow and I have very narrow feet. But when I went to the Runner's World's online shoe guide, the New Balance shoes had more stars. So now I'm worried that I jumped the gun and I should have held off for them to order my size in the New Balance shoes.

Tonight my plan is to hop on a treadmill (can't take new shoes back unless tested only on treadmill) and try them out. But if anyone wants to weigh in, now's your chance!