Best amp 5K or under for anthems avm 20

Here's one that owners really rave about!

Maybe the ZH-270 will suit your taste. I am not affiliated to the company by any means. Just making a suggestion.
This question is not complete to me. I don't understand your needs or uses for the amp. Are you talking 2 ch, 5ch, 7ch, what? What speakers are you using?..etc.