I just got my Markbass... so I can't vote either.
But I just wanted to share part of what made me comfortable to take the leap from SWR.... I was reading an MB ad in BP magazine and the General Mgr Marco de Virgillis said something in lines of, "if you are or know someone who is a technician, I invite you to look inside our amps" - I suppose to check on the wiring and build quality, etc. That spoke volumes to me that he is willing to take the risk of someone opening up the amp... Shows they have nothing to hide and are very proud of their products. Am I gullible? I don't know, you decide. And if I am wrong, then that what warranties are for.