I have one of the earlier models in that line, the Silver RS8, that I bought new in 2009. They were followed by the Silver RX8, and now simply, the Silver 8. The MA website has all of the info you need. So does Google. They are fairly new, so I doubt you'd find many, if any, owners here.
The RS8 are in my main system and I'll probably never sell them. I keep bringing in vintage speakers to A/B against them. The vintage speakers always end up in another system or get sold.