I give this 3 stars for one reason.  The top cover seam is very noticeable and obvious. (see pic)  Why they designed it like this is beyond my comprehension.  It cancould be done better and less inconspicuous.  Drives me nuts... The entire toilet has such sleek lines then this awful cover ensemble on top every time your looking down at it.  Just wanted to point this out for anyone else looking to purchase.