Depends on the rest of your system. If you have a good return system, then an A1000. If you have a dead head system, then a pump that has a return line off the pump back to the tank like an A2000....

On a cheaper note, we have recently run the eddy 160 on two cars, and is alright. Don't know about longevity yet, we will see, but we are running 10's with it.