Conrad Johnson CAV 45 or CAV 45 S2. Ive owned both with VS and they are very close. The S2 is better but the original is very nice just like the S2. 45 watts vs 60 watts. I also ran a McCormack with vr4’s long ago also sounded really good.
You can pick up an original for $1300 to $1500 and the S2 for $2500 to $3000 used they retail for $5500 now.
The El 34’s with the VS works very well I preferred it more than KT88 amp’s in my system.