As a general rule, I don't endorse machine shops. As a former machinist I think it's a little unfair, as I expect it to be better than I could do it myself. I'm going to tell you that after seeing a block that Justin at R&D decked on 7.3 IDI block, the finish was incredibly high quality. I've fly cut a lot of stuff myself, and I've seen lots of really good engine machining with really swanky fixturing and equipment where no expense was spared. All that being said: the finish on the decked block at R&D was freakin superb. Like better than I've seen with way, way better stuff. If I was paying for a reman, he'd be getting my money based on the machine work I saw and his familiarity with IDIs and nothing else.
Lots of other good vendors on this site (Russ builds a great turbo and his injectors are top notch).
Endorsement over. Good luck whatever way you go.