Let's expose a few things.

These structured media cabinets are cool. Their splitters suck! Make sure you're using decent 1GHz rated splitters.

Second. Quadshield is nonsense, RG-6 dual or trishield is fine, QS is more expensive... thicker... and it doesn't block out all that much more in our intended applications. 2GHz is only appropriate for sattelite, the physical CATV plant will not exceed 1GHz. Too difficult to maintain, we'll all be FTTP before they roll out with something above 1GHz. Rather than spend a billion dollars on cable, RUN SMURF TUBE! Then just pull cable where you need it. SMURF TUBE!!!! is the coolest stuff on earth.