Quad East is an awesome spot for spinning. I go all the time and they run a tight ship. George is clearly the top dog here and it comes down to his energy and his music. He comes around and helps adjust if necessary and he just clearly enjoys what he does. They cram in as many as they can when demand is high. Sadly there are instructors I avoid, but that is how it goes. My only feedback would be for instructors to really think about the music they are playing. Slow jams and weird emo music are not going to get my heart rate up. I recognize everyone has their tastes, but come on, play new wave, dance, even top 40 if you have to. It has to have a good beat or spinning gets boring fast!