Just thought I would update this thread. I just received 70 sheets of Ilford Delta-100 Pro reverse processed by dr5 from my trip to Yosemite and Sequoia NP. All I can say is WOW! Delta-100 is warm in the dr5 process, but easily corrected (if desired) once scanned. Compared to RVP-50, I found the dr5 process on delta-100 gave me an extra ~ 1.3 stops in shadow detail. Very impressive. I'll likely send a few out for scanning, since this was the reason for generating B&W transparencies in the first place.