Give a couple of dedicated film guys some business
Mike Lussier of AgX Imaging deals exclusively with E-6. Yes, slides only! He will coil up the entire roll in a sleeve, cut and sleeve, or mount them in nice solid thick GEPE mounts for projection - your choice. Service is excellent and if you want anything special done to the film, just ask him!
For C-41 (negatives), and B&W, I've tried Edgar Praus Productions for the first time. I just received the box back, so I haven't had a chance to check the film yet. But, Mike recommended him, so I have faith. Turnaround was very fast with Praus.