The most precise one I’ve ever used was the “butt gun” style, but there was a learning curve and it’s not suited to every toilet. Toto makes a nice integrated-s

The most precise one I’ve ever used was the “butt gun” style, but there was a learning curve and it’s not suited to every toilet. Toto makes a nice integrated-seat one, but IMO it changes the geometry of the commode and makes doing the job less comfy. Ymmv