When dealing with high-end pre/pros, I think your decision should primarily come down to features that matter most to you.
I will have an AVM 30 in my system by the weekend. It's extensive bass management features were the most appealing to me compared to others. It's a feature that can truly improve the sound in almost any room, so that's what was important to me. We'll see how it turns out, but sorry I can't give more info or a direct comparison to the Halo.
I believe the Halo has some impressive self-calibration features, so that feature may be important to you.
I will have an AVM 30 in my system by the weekend. It's extensive bass management features were the most appealing to me compared to others. It's a feature that can truly improve the sound in almost any room, so that's what was important to me. We'll see how it turns out, but sorry I can't give more info or a direct comparison to the Halo.
I believe the Halo has some impressive self-calibration features, so that feature may be important to you.