Call Kevin at Upscale Audio since they are the same price point and he sells both. I found him to be very generous with his time.
I haven't heard the MkII, but I had the AE-3 DJH and loved it. You might already know this, but the main difference structurally on the MKII is a second set of outputs, a new power supply design and chassis. Sonically, I don't know the difference. If the sub output is not a deal breaker, the DJH is direct coupled, so it has pretty solid low end on its own.
Either way, ditch the stock tubes. I have all Cary/AES products and I found that tube rolling greatly improves the sound.
I haven't heard the MkII, but I had the AE-3 DJH and loved it. You might already know this, but the main difference structurally on the MKII is a second set of outputs, a new power supply design and chassis. Sonically, I don't know the difference. If the sub output is not a deal breaker, the DJH is direct coupled, so it has pretty solid low end on its own.
Either way, ditch the stock tubes. I have all Cary/AES products and I found that tube rolling greatly improves the sound.