I have just accumulated different receivers over the years. I have one without a ball that came with my Ranger for pin hitches, one with a 2" ball that I got when I got my F-150 and one with a 2-5/16 ball that I got when I realized that in fact dad's car trailer didn't take a 2".
I don't have to have a goofy looking cluster of balls sticking off the back of my truck, a heavy cluster of steel to carry from one truck to another, a huge object to try to store when not in use, and I can have a receiver in each truck. Usually the Ranger has the empty receiver and the '150 has the 2-5/16 in it.
I have towed 7-8k with them. I think they are something like a 2" drop, they look "right" pulling the managery of trailers I pull. (2 different car trailers (2" and 2-5/16"), a car trailer sized flatbed utility trailer (2"), a old fertilizer cart converted to lawn mower trailer (pin), and a misc utility trailer (2"), along with a wide smattering of farm implements (all pin)) I will admit, the manure spreader looked goofy on the Ranger, but that was more because it was almost to the bumpstops...
A little drop goes farther than you think. Your truck is basically stock, unless you have really goofy trailers it shouldn't take a whole lot to get it close to right.