Pinnacle Armor/Dragon Skin....
If you want the "best", check out the new Dragon Skin body armor from Pinnacle. It's had some - reviews & problems with govt contracts but those reports were disputed.
The engineer who designed the US military's issue protective gear supports the newer Dragon Skin. It's not cheap but it could meet your needs.
PS: check your local & state laws re; body armor too. You may not be able to buy it in some places.