Bidets are inexplicably not popular in the US. I was introduced to the bidet in Japan, and bought one soon after my return.
I first bought the BB-1700. After a year of ownership without a single problem, I decided to get another. The BB-2000 was on sale, so I pulled the trigger. So far it has been great. I like the idea of the controller being part of the seat as there is no need for batteries, and you couldn't possibly lose it. My concerns of a separate controller were unwarranted. I mounted the holster on the wall, and will only take it out to change batteries, which after a month, it has not been needed. It is easier to see the controller on the BB-2000
The BB-2000 has the same great quality as the BB-1700. I do wish the controller screen was backlit, but then I'd probably complain about the shorter battery life :)
Understand that it does require electric outlet.
Get it. The quality-of-life increase is real.