I am interested in Counter flow chillers, can someone please give me the rundown on these, e.g operation, and also, chill times, ie are they faster than the normal cooling coil??, any info would be great fella's. I am currently using a cooling coil, but want to cool my wort faster, and also maybe use a hopback, so am thinking about a CFC. Also, how do you clean it ???. Any info would be much appreciated.