I've had three instructors, my current one seems good. My first one I got on with really well (Hero worship maybe), but I had a chap for one lesson, and although he was really nice and we got on, his instruction style didn't suit me, and I produced the three worst landings I have EVER done. Even my first one was smoother.
I would suggest the instructor is one of the most important elements of the learning process. All good experience though.