I have NOT owned a hydromaster, but I have never heard anyone be a fan of them after owning one. I HAVE ran alot of legends and run a bridgepoint version of one, its the same just has a briggs motor, which I have had alot better luck with than kohlers. running soft water through these model of prochems is very important, it will get rid of alot of annoying issues. there are things I have never had to do with my machine because of the water softner.
they are good machines although if they had come with a 22hp motor and a #4 blower it would have been alot better and the cost of the machine wouldn't have been much more.