When all was said & done, in that particular case, I went with a G10A ... because the actual QUILTER closed-back cab emphasized lows so much that the one that sounded best in the little semi-open Marshall cabs sounded too boomy in the Quilter box.
Having said that ... I'll also mention that the G10 (ceramic or Alnico) is still my favorite WGS 10 ... so you might consider a pair of them, too.