I bought a 93k mile 2010 a few months ago. Previously I was driving an '08 Porsche Cayenne turbo. That car will put the fear of God into you at repair time. I made it through on DIY skills but a motor is over $20k, and they DO fail.
I stumbled on the Raptor after cosigning myself to a regular F150 as a safe choice. They had this Raptor... and it is WAY cooler than any regular F150, so I end up going for it.
Upsides, seems pretty durable, a bit rattly and loose on rough stuff but not to the point of shedding parts. I run a lot of gravel and forest service roads with it. The Raptor does this better than about anything street legal.
I LOVE the sound of it, even the wimpy 5.4 has a nice bark to it, makes the truck fun to drive. Otherwise it is pretty comfortable and quiet inside. I have done 1300 miles in a day and not been crippled.
Downs, No matter how well cared for, have a repair fund for the first month. I bought mine at a dealer, they replaced the tires/aligned, battery, oil service, air filter, wipers and checked it over. Still, the brakes, while they have good life, must be the cheapest garbage the PO could find, they need to go, ~$300/axle. My third brake light is fried, $300 Raptor specific part, as are all the expensive leds on the exterior. Minor stuff though and I daily drive the truck, almost 102k now.
Rattles more than I am used to. Some of the interior ergonomics are just crap. For the biggest selling vehicle in the world, the interior layout is inexcusable, both major competitors offer better fitting guts.
I like the truck a lot though. Its character along with decent daily function make it a winner for me. I might keep it a couple of years.
Good Luck, I also suggest going for it.