I have been successfully tray developing black & white sheet film, both 4x5 and 8x10, for 30 years. I'm about to attempt developing 4x5 color negatives and I'm thinking that I won't be able to properly maintain the chemistry's temperature in open trays. So I'm looking to the forum for advice.

For those of you who use either the Jobo Expert Sheet Drum or the Mod54 Large Format Film Processor in a Paterson, or similar, tank, could you give me the pros and cons for those processing formats? Are there other processing methods any of you would recommend?

Many thanks!