I have a Jobo CPP-2 with 3010 expert drum for 4x5 film development. With rotary batch development one cannot tailor the development time for individual negatives as with open tanks and trays. The convenience and repeatability of rotary development is great. Also, I hear lots of horror stories of uneven development, streaks, and scratches using tanks or trays. I want to give open tanks and stainless hangers a try. Is it worth it or should I stick with rotary. Are stainless tanks better than plastic?