I have been communicating with Seth and Margaret at Marina for several weeks. Good customer service so far. As recommended by some here, I want to purchase a S200, but Marina said they may not be available until late July 2021. My old Polaris 280 and its pump are hanging on by their fingernails. I cannot delay, so the real choice right now is between a Nautilus CC Plus and Triton PS. (Who thinks up these silly model names?) Margaret said the Nautilus is an older design, is available, but will soon be discontinued. Also, she said the Triton PS is a newer design and similar to the S200. I am leaning towards the Triton PS. Any suggestions? Thanks.