The one decision you need to make is do you want to be able to take the hitch out and have a clean bed to haul stuff (in other words, no bed rails permanently mounted). Its cheaper to have the above-bed rails. I have the Reese 18K Signature hitch with the under-bed mounted rails. When the hitch is out, only 4 "pucks" ramain that stick up about one-fouth of an inch. Other solutions (B&W) leave nothing sticking up. Of course, you will pay more for this capability and the install is more difficult.
Ken
2007 FORD F-350 4WD SC Longbed, 6.0L Powerstroke, Reese Signature Series 18K hitch.
2007 Keystone Montana Mountaineer 342PHT
I personally like the Hijacker best of all. The are made in Canada, so I don't think you would have a hard time finding one. Make sure you look at one b/f settling on a hitch. Go to www.hijacker.com and check them out.
Drew, Lora & our boys
2007 Chevy Silverado 2500HD CC, 4x4, Duramax w/Allison, and Timbrens
Highjacker Ultra 16,000 lbs Super Slide Hitch
2007 Cougar 289 BHS
Honda EU 3000W
2007 34' Shadow 4 horse trailer
I'd suggest making sure the one you get pivots in all four direction (front, back, left, right) and moves up/down for height adjustment. Reese Signature series does, but not all Reese do.