I had the 1100p. I now have the 1124p. I never remember the 1100p buzzing like this one. Really starting to get on my nerves. I tightened the 3 screws on the top, and that helped a little, but it's still bugging me. I *suspect* that they aren't all like this, and out of the statistical distribution of all units and their "buzz index," I have one more towards the "worse" end of that scale. I'm thinking about dumping it and just trying another one (internet sale, so I can't return it anyway). Your experience?