EAR 834 vs. Monolithic with HC power supply

Want to know if anyone has heard both of these units? If I went with the EAR, I would probably roll 5751 tubes into it as I understand that it takes a 12AX7. But with Monolithic I could upgrade with Modification. I run Well Tempered table with Benz high output MC, passive preamp, McCormick amp, and Maggie speakers.

Thanks!

Robert