Hi Mribob,
You certainly have great speakers. You need to supply those bad boys with lots of current to make them shine. I have the MBL 9008A, and I thought it was definitely a worth while upgrade from the 8011 and even the 9007. I think you would be making a major improvement to your overall setup, especially in such a large room. I think you should stick with MBL so you get that Synergistic effect between your speakers and Amp. I would also look towards your meridian preamp as a possible upgrade area as well. I love Meridian for surround sound, but not so much for 2 channel. For what it's worth, here is a link about that topic:
http://www.avsforum.com/avs-vb/showthread.php?t=993995
Rich
You certainly have great speakers. You need to supply those bad boys with lots of current to make them shine. I have the MBL 9008A, and I thought it was definitely a worth while upgrade from the 8011 and even the 9007. I think you would be making a major improvement to your overall setup, especially in such a large room. I think you should stick with MBL so you get that Synergistic effect between your speakers and Amp. I would also look towards your meridian preamp as a possible upgrade area as well. I love Meridian for surround sound, but not so much for 2 channel. For what it's worth, here is a link about that topic:
http://www.avsforum.com/avs-vb/showthread.php?t=993995
Rich