I tow my Chevelle and just about anything else that needs to be towed with my K5. The load is 5000 pounds with the Chevelle and trailer and more when I tow my friends 1ton chevy truck. My trailer has electric brakes and I figured I would start using them. It's gotten kind of hairy on the hills a few times. My question is, what features should I look for? What should I stay away from? Thanks.