I use an ExactPower SP15A for everything except the sub. The sub goes into a PS Audio quartet. Sounds great to my ears. Bought the EP 15A about 7 months ago on audiogon. It's within your price range if you can find one.
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!