I also like the Tecma, I usually clean mine when we move, I use White Vinegar and Liquid dish soap, with about 5 gal of water, empty when I get hooked back up.
And for the san-a-con, I adapted my sewer connector to fit a 1" flexible hose, purchased from "adventure.net", I have used it exclusively for the past 2yrs without a problem., just takes a little longer to dump the black tank., I might add that we use the Washer and also have a D/W that also drains through that 1" hose., just do a thorough flushing when empty the Black tank. Marvin