Who would you choose???
 

I have some VERY high $ autos I need authenticated. I have already submitted an online cert for them and they were given the green light. I want them cut and slabbed individually but who do I trust.

I would definitely cut them myself, and would not want to trust this part to anyone else. I personally prefer an LOA vs. slabbing the signatures.... I like to mat and frame them with a nice vintage photo (will try to post images of a few later...)

But if you are dead-set on slabbing them, I recommend either Spence or PSA. Both are equally respected/recognized, and both seem to command the same money in the marketplace. I guess it just depends on who you think has the more attractive slab (and whether you prefer red or blue...)