Recommend speakers for a restaurant sound system

My company is opening a restaurant this summer. We want to install a great system that will be rugged enough to stand up to daily use but still deliver a great sound.

The space is 3600 square feet and the ceiling height is 20+ feet. We will be installing a spray on soundproofing system for the ceiling to reduce sound reflection.

I have been underwhelmed by the commercial systems that are sold for commercial applications. Can anyone suggest speaker systems and amplifiers that would deliver great sound?

The systems I have listened to are: (1) too bright, (2) too muddy with a significant loss of detail and (3) total lack of dynamic range.

We don't have an unlimited budget, maybe $5k to $7k for an amp and three sets of speakers.