Not by choice but a buddy just gave me a set of XR-6 that are mint cosmetically but need the mids and woofer refoamed. I have a an MQ-101 already. Well, I have 2 actually. Now for the first time I will have an all MAC set up. Can I get suggestions or a link for new surrounds. I want the closest to original as I can get. Also, does anyone here have any experience with these speakers? Any opinions as to run them with tubes or solid state. I am thinking probably solid state since they are from that era. Thanks a bunch.