Hi Jimsky - That is funny as I have the Triton on my pool and my father has the Nautilus, you really have nailed all the feature differences in your post, with the exception of The Triton comes with a caddy and the Nautilus does not. The main thing I like about the Triton is the handle as it makes it much easier to remove the cleaner from in and out of the pool and the caddy is nice as well. If it were me I would go with the Triton based on the additional options you referenced. Overall the Triton has been the best cleaner I have used on my pool by far and I have used several (Polaris 9300, Polaris 9400 & Hayward Navigator). The Triton does a great job with sand as this was important to me as I live in Florida with an unscreened pool.