From what our rep has told us they are redesigning the jetting in them, as well as making the plumbing even more efficient. The cup holders are being added to the shell, as well as the 2004 neck-Flex pillow along with the new style of head rests. It will also be available in the new Pearl Shell Colors that D-1 has begun to offer this year. You might also want to look into the Lotus Bay as well. Although it might be a bit out of your price range, it offers great jet action, features and a beautiful curvy design. Also it should be noted that the Caldera Aspire is an excelent spa for the money, as it includes standard: 24 HR Ozone system, stereo system, In-Spa and outside LED Lights, waterfall, as well as an excelent warranty. The Niagra looks like an excelent spa (we at present time do not carry the niagra). If it is anything like the Geneva Utopia, it will rock. As the Geneva has excelent jet action as well as many great features.