We had purchased the Relay 3-4 weeks ago but had not had it delivered yet. In talking to the owner we were standing by the Flair and he mentioned how much more insulation was in it compared to the Relay. I also wanted the 24 hr circulation pump with an Ozinator. To me that is too important to go without and it bothered me that we were buying one without. To have the water circulating when its 40 degrees below zero with the heater running is something I had for 20 years and feel its important. There is no option for that pump on the Relay. We decided to upgrade! Once we had it home I realized that the 3 pump speeds (pump 1 low & high, pump 2 high) along with the diverter valve to control the jets really added to our options on water flow. The jets are nice! I believe there are more/better?? We love it and are very happy we upgraded. Ours came with speakers factory installed but not hooked up. We always said we never would want to listen to music but I tried an experiment and brought out a portable speaker. We stayed 2x longer than normal! I ordered the dealer installed stereo w/bluetooth & subwoofer. They came out and put it in. WOW! It is amazing! (also very expensive). The warrantee is longer, the tub itself weighs 10% more than the Relay but holds 10% less water so that tells you that there must be more insulation stuffed in it. I will pay for the upgrade just on energy savings over time..