I have been using my Saunders LPL 4500 enlarger for over a year now and love it. The VCCE head especially gives me a source of joy not to mention paper savings when changing contrast. I have recently started shooting some 645 roll film. My printing times can be 80 or 90 seconds (not counting burning) for 11x14 print s with my 80 mm lens at f5.6 or f8. I don't really want to be wide open. Saund ers sells a 35mm mixing chamber and a 6x7 (I believe). I occassionally do 35 mm , but not very often. I assume the 35mm mixing chamber would give me a hot spot on the 645 negatives so I am ruling it out unless someone suggests otherwise. I assume that getting the 6x7 mixing chamber will significantly reduce my printin g times for both 645 and 35mm negatives. Any thoughts on how much ? I don't re ally mind the long times as much as not having the ability to stop down another couple of stops.