Ford F Series
The Ford F-series is the most popular truck series among all American trucks. The f-150 is the most popular out of all Ford trucks. The most common motor in the new Ford F-150 is the 3.5L EcoBoost. The most popular trim level is the F-150 Lariat. Some common problems with them are the intercoolers tend to take a crap pretty quickly, the timing chain wears faster than most trucks, and they have some Ignition Issues. Which those couple of things are no big deal.
Here is some pitures of some of the different Ford F-150's:
Here's a list of trim levels for the ford F-150: