The manufacturers of the lifts generally sell the pads to be used with their lifts. They're usually a slip-over design, have a textured surface for slip prevention, and are designed to not scratch the vehicle. They're also not expensive -- usually under $100 for a set when they need replacing.
The good lift manufacturers (like BendPak) aren't playing around. They know professional garages are buying their products not just for high value cars, but also for working on irreplaceable unicorns.
Two post lifts are frame lifts by design. The pads that come with the lift arms should be more than suitable. The only thing you may need to consider is getting low-profile arms.