I prolly have the same script (right eye) by now as you
and used a 13 t6 for a couple of years , fantastic eyepiece
over time I found the 13 's eye relief to be getting a little tight , not unusable just a bit uncomfortable , and I don''t use my reading glasses to observe with, don't understand that one ?
Anyway now everthing I have has long eye relief . .. I havn't tried a 12 t4 , love my 22t4 , miss the wide field of the 13 t6 but
trading to a 14 xw was a move I've yet to regret.