6sn7's for the AE-3?

Hello A-goners, Your advise is needed here for I'm in a 6sn7 tube fog. I currently have pairs of rca's, slyvania's,and tungsol's. My best sounding are the sylvania 6sn7wgt's. These are the brown base jan version. Alot has been written about the vt231 and I do have a pair of sylvania's that are the same construction. However to me these tubes don't sound as good as the brown base tubes. That may sound surprising to those of you that own the vt231. I listen to alot of jazz(coltrane, miles etc) and would like your ideas on selections. Thanks to all.