Does anybody have any experience developing sheet film using the JOBO 2521 tank, or equivalent ? I was thinking about getting into Large Format photography. In my closet I found a brand new JOBO 2521 Tank with a 2509N 4x5 adjustable reel that I purchased about 4 years ago but never used. I was wondering wether the JOBO system is comparable to the dip-and-dunk Tanks that are more popular. In school we used the dip-and-dunk tanks, so I don't have any experience using the JOBO.