I replaced my older Uspaa bidet model and found my new BB-2000 cleans much better!  The water stream is much more powerful when you read the directions and set it up to its highest.  This will save much TP!  Also, loved the fact that the noise of the auto deodorize feature can be turned off so as not to disturb others in the middle of the night.  My only difficulty was during installation when I could not get the seat bolted tight enough onto the toilet to avoid the whole seat slipping to the side.  Problem seems to be the provided tightening nut causing friction with the underside of the rubber washers.  The solution turned out to be putting a thin nylon "slip" washer between each rubber seat washer and the nut.  I actually robbed the nylon washers that used this concept and came included with my old Uspaa model.  I recommend that Biobidet include these two slip washers in their parts package!  All ended up good!