I had the AE-3 DJH for awhile and had good luck with vintage Sylvania VT-231 and Tung-Sol 6SN7 tubes but was also happy with the reissue Tung-Sol and that might be a good fit if you're on a budget.
Best advice I could give would be to email Jim McShane at McShane Design and tell him what you need and how much you have to spend.
Best advice I could give would be to email Jim McShane at McShane Design and tell him what you need and how much you have to spend.