I also have the Trio-pure 50.

I cant compare it to other systems but from what I now know about Ozone.....I cant see that it does anything. Even if I turn the Ozone part of the Trio-pure off it performs exactly the same.

The SWG part of the Trio-pure is marginally good and for the price I cant help but feel I would have been better off with the "autopilot" or other "SWG only" systems favored on these forums.