There is pictures of these, you can see both speaker inside..
Btw, i just want to point something, i guess the main problem with you, is when bought the R11 was because u think that going to be a 5 start performance by everyone, but here in audio world... you just cannot aggre with everyone, there is people who hate revel and kef sound and might love their B&W SPEAKERS, if you take a momment, there is no much of them here because usually you see members washing their speakers, for some people Revels speakers just do bad cabinet with cheese crossover, you ALWAYS gonna find someone that just dont like your speaker. But being very honest, you are not going to have the best if you dont pay the '' best '', in this case is not the R11 or the R11M, are the Reference 5 META..
If you just wanna have always the best, sell the r11 and buy the REF5M, then save 20,000 usd for the next KEF REFERENCE, buy these used might have a better deal. But im pretty sure there is someone that are going to think something like this '' pff for that money you can buy this speaker: xxxxx ''
Worth to mention: The expensier the speaker, the less people have acces to that speaker, the less bad comments you are going to see
Usually people tend to change too much his speakers for room problems, so the second market is very interesting.