I have 11 of them. If I were you, id spend a few minutes at somebodys house that has them. It might not be for you. They make ALOT of noise. I was working on my truck one day in the yard and they were potracking all around me, just about drove me nuts, I had a splitting headache. Funny thing is, I kind of tuned them out somehow and they were driving me crazy but they did it so much for so long, I couldnt really hear them. Strange huh?