Does anyone know the difference between the Mordaunt-Short Avant 900 series and the plain old Mordaunt-Short 900 series? I bought some of these speakers a while ago from a well known high street retailer. They were (and still are) advertised as the Avant series. At the time I didn't know about the non-Avant series and so didn't think to check. But only now I have realised they are in fact from the older series. doh! As far as I can tell (and being completely ignorant, remember) the only difference is physical - as the Avants are slighty smaller. Price wise they are about the same and that's why I'm annoyed as it seems they have pulled a fast one on me! Is it worth the hassle me taking them back and complaining or is it just a cosmetic difference? Any advice would be much appreciated.