as for trays, i use them because i think they're faster. i use a drum for ilfochrome (cibachrome; i.e. "dye-destruction" prints from slides) because of the toxicity, but i hate it. the drum has to be rinsed & dried after every use!
also, with the Tetanal Mono PK RA-4 kit, to my knowledge i've never had a problem with exhaustion because of exposure to air. i didn't even know this was an issue until i read the tech sheet for Kodak's (high temperature) RA-4 stuff. i don't think the concentrate keeps very well so i mix it all at once, and then i store the juice in collapsible bottles. it seems to work fine until i dump it after the suggested number of prints. "your results may vary."
with the kit i just mentioned, timing isn't a problem because you can exceed the time for each step by 50% (as i recall) with no problems.
you can check prices and get processors on-line from bhphotovideo.com or adorama.com or places like Calumet, if there's one near you. you should probably consider used ones, too, which can save you a bunch of dough.
Last edited by Peter Osuchowski; 10-01-2004 at 02:31 PM. Click to view previous post history.