I obtained my Niagara about a week ago. Dealer got it to me in two weeks. Waiting for two weeks was hell, so I can't imagine what having to wait a month would feel like. Got the Redwood base with the white pearlescent shell. I wanted to maximize the lighting (thought the champagne opal would subdue the lighting a bit).
I am very pleased with the tuneability of the jets. It is very easy to get the water jets to an optimal level (imo). The water chemistry issues have been negligible as well (on city water). I was a bit concerned about what appeared to be small pockets of white floating on top of the water. These were only noticable upon very close inspection. I do believe that they were just clusters of gas bubbles that went away after leaving the cover off for a short period of time. Maybe someone else will chime in on this one.
After wet-testing Marquis, Sundance, and Caldera, I am very happy with my choice. I just wish that every one in the family would get over all the bugs that are in the air so we can properly enjoy the spa. I know you will enjoy the decision that you have made.
Jeff