I compared the features of BB2000 with BB1700 and those of TOTO S550e. BB2000 comes out to be a clear winner in terms of affordability (for less than half the price of TOTO) while retaining almost all of the features of TOTOS550e and longer warranty. I also bought the product on flash sale which saved me even more. Will know the durability in the coming days/weeks/years. Will update if any changes. Until then, Thank you Bio-Bidet!