im considering buying a martin logan setup soon. i was wondering what was considered to be the better center channel? im lookin at either the fresco or vignette. the towers will either be the mosaic or montage. what is the difference between these towers? i wont be putting them in a large room so if there is just a size difference then i think i should go for the smaller one. also i will have my own sub. any suggestions or thoughts would be welcomed.