So far, i still prefer the Rhino to the Hunter for the vigilante missions.
Cool tip for the Rhino: Your only vulnerabilities are fliping, drowning and getting pulled out, right? Here's a way to accelerate fast enough to minimize the chances of geting jerked out by a cop: turn the turret aruond backwards and use it like a thruster.
You can get going pretty quick by doing this, so be careful...
Don't flip or fall in the water.