I've been using a $30 bidet for a couple years now with not a hint of trouble. Figured I'd test the concept out before dropping real money on a Toto, then realized that I actually like the water cold. I clean the toilet the same way I always have -- with a toilet brush. The bidet does not really change that process meaningfully.

I guess my experience living in a house with one of these in-bowl bidets was very different. It introduced more nooks and crannies than a simple bowl, and necessitated more frequent cleanings.