Now that I've had my LFM1c for a week or so I can say that I'm very pleased. My old Sony was a lot boomier that I thought. The LFM1c blends in with my Studio L series mains seemlessly were as the Sony sounded like a seperate piece of equipment. As for the windows, there is improvement due, I think, to the directional nature of the Sony (front firing and aimed directly at the wall with the windows). I still need new windows.