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Something doesn't add up here unless I am missing something. The original poster (OP) stated that the dealer said "Why don't you try this CASPIAN while I fill up the Sumatran" so it looks like the spa you enjoyed was a Caspian, not the Sumatran yet your title says you bought a Sumatran. Sounds like you bought a Caspian instead (you didn't elaborate on anything after the Caspian). Did your prose miss a beat there or did you mis-state your choice or are they the same thing? If they are the same tub, why was the dealer filling up another one?