After much TB Amp forum reading and research and after much bargain hunting, I finally have my rig together - nothing exotic: a used SM400s and a used WM410T, but I like it. I put it the head into a 4-space SKB rack and will fill the extra 1U with a power conditioner/light unit. No pix yet, but soon. Total cost - around $1500 CDN. Thanks to all the contributors to the Amps forum over the last several months - it has certainly been interesting reading... DD, out.