I've been using ID-11 exclusively for film development. Looking for something more economical I picked up a bottle of Ilfosol S the other day (it was either that or HC-110). I've been happy with my ID-11 routine using rotary processing (unicolor drums) with about 30 seconds to a minute less development time to compensate for the increased agitation. Does anyone have any hints for switching to Ilfosol-S? Should I use the recommended development times (on the bottle or at digitaltruth.com/devchart.html )? How will my results differ, if at all, from ID-11? Would I be better off with HC-110? This will be for 120 roll film and 4x5 sheets. Ilford FP4+ and HP5+, and Efke IR820 4x5.