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.
Clyde
PS: check your local & state laws re; body armor too. You may not be able to buy it in some places.
On the other hand, if you want something that won't make people nervous (and money is little to no object), talk to Miguel Caballero, the "bulletproof tailor of Bogota".