I've been very happy with my DL32R, but, for my needs, the QU-PAC looks like it might be as good or better all around.
1. Enough channels: I need 16 for the band, plus Talkback, plus a stereo feed. QU-PAC has that.
2. Shallower / lighter: The DL32R in a 6U rack with mic splitters is very heavy. I suspect I could make a rig at < 70% of the weight with this.
3. USB stick recording: Using a drive isn't bad, but rotating through USB sticks would be more convenient for my workflow.
4. Front panel controls: The only reason I am comfortable with the DL32R is because we are just using it for monitoring and recording, not for the house. I worry about losing connection for a variety of reasons and worry about errant software updates. With the QU-PAC front panel controls as a backup, I'd feel comfortable enough to use it for the house mix, and could possibly even ditch the splitter setup or modularize for use only when demanded by the house.
I am hoping beno is working on a DL1608 replacement that looks more like the QU-PAC.