We got the arctic spa ocean Signature model in Blue. I like the Ozone & Onzen, saves on chemicals, although I did throw in a cap ful of Chlorine when I wasn't confident yet about pr0per sanitation. Had to program the Ozonataor to run for 23 hours/day. Seating for us is a non-issue, the outside seats are different depths. Never noticed it as noisy, I notice my neighbors 2 seat spa accross the fence more when it's on. Had to replace the Ozonator electrodes under warranty, an easy task. The after sale service at my dealer (to date) - adequate.