I don't have the Gemini Model 8 but I own and use a Gemini 4, which is a Gemini 8 with 4 receptacles instead of 8. I use my Gemini 4 for powering my Remote Server Room (RSR) components: EtherREGEN, AfterDark Master Clock and Power supply and main internet router, I've also used it in the main rack as the power distributor for the main system components, and it's very effective in that application as well. Overall, my Gemini-4 is an excellent power distributor, very quiet with excellent DTCD functionality combined with -30dB of noise reduction zone-to-zone and -40dB input to output, which is actually more than a Venom V16. I would estimate it's quality with respect to audio quality improvement powering components as well as noise reduction on-par or somewhat better with the Venom V16 power distributor, especially for it's price.
A big plus are it's 4 Altaira-type (CG-NR) terminals which provide chassis ground-plane noise reduction capability. While a Denali V2 also as a single ground terminal, it does not provide the level or degree of CG-NR that the Gemini's Altaira-type system does. There is also a 5th ground-terminal that provides ground-plane connection to the overall system's power distributors if an Everest, Denali v2, etc., power distributor is being used in that configuration as well. As such, it's very flexible device useable in a variety of set-up applications.