What a task David ... Congratulations!
You have done great service to the head-fiers ... I could not even dream of undertaking such a task ...
Need a little help ...
As of a few years ago ... re-cabled 701 used to be my favorite pair ... except they were uncomfortable on my head and I desired more bass out of them.
I went through most of Grados - all the way up the ladder ... found them too colored for my taste ...
Senn 600/650 with fancy cords ... Nah (too closed in)
I have HE-500 - I like them but I dream of HD-800 but read that they are hard to amp / match.
I picked up T1s during black friday (though I was not impressed by them during shows) ...
Is there an amp that makes T1 really shine (sound-stage is so important for me)
Or am I better off with 800
Either way (800 or T1), I need a solid amp recommendation and finally balanced or single ended cable.
I have been hearing good things about Bryston's BHA-1 (except strange volume control)
Best amp synergy with the T1s was the WA2 (with TS5998, Siemens E88CC or Mullard CV2492 and Telefunken EZ80 tubes). End game amp for the T1s IMO.