2010 GMC Sierra 3500HD SLE Package Long Box $22,890

If you're looking for a capable heavy-duty truck with an impressive amount of equipment, we recommend the midlevel Sierra SLT. It has a wide range of available option packages along with lots of standard gear such as leather upholstery, heated front seats and power-adjustable seats. And if you want Denali-level creature comforts, you can get most of those as packaged or stand-alone options. For towing heavy trailers, we'd advise getting the 6.6-liter diesel V8. The 2019 GMC Sierra 3500HD is a big truck with big capabilities. It's available with two powerful engines — a standard V8 and a turbodiesel option — and both can pull massive trailers or haul monster payloads. On the inside, the Sierra is generously equipped on its base and SLE trim levels and gets lavish on the top-dog Denali model. This GMC is a comfortable and quiet truck that can get the job done.