I have this Dudadiesel plate chiller / heat exchanger for sale. I've had it about 18 months and it has worked great. I heat sanitize prior to each use, followed by iodophor. I employ a hop screen in my kettle, so no hop debris was forced through the chiller. Post use, I rinse with high pressure water, then clean with PBW. I've had zero issues with it, but I did upgrade to the B23 (12" long chiller). I did cut the studs on the bottom of the unit so it would fit in my setup, and so it would sit level in the sink while cleaning.
These go for $95 new plus shipping, so how about $60 plus shipping for mine?