Recommendation for a power conditioner

I've never used a power conditioner before and thought now is the time, even if for nothing more than cord management.  I'd be plugging a JL sub, an LG OLED set, a Classe CAV-500 amp, Classe Sigma processor, and Oppo 4K player into the unit.  I'd like to keep it to around $800, whether new or used.  Any suggestions?  Thanks!