Hah! Too many to list!
Actually I do like properties of all of the normal suspects (Centech, American Autowire, Painless). But I always default back to Painless even though it's the most expensive because I like the Ford factory colors that I've become familiar with.
Same as I'd use GM colors re-wiring a GM vehicle, I prefer to stick with Ford colors for Fords.
That said, I like them all from a layout standpoint, a quality standpoint, and a functional standpoint. Each is different in their way, but with reasonably good layouts for an EB.
Ease of installation overall though? Each has it's strengths, with none of them having any particular advantage over the other in that regard. They all take a good amount of time to set up fully. Involving either a lot of contortioning under the dash and hood, or removing the dash for ease of access.
Or doing with the body all new and clean!
Lots of discussions on each of them here in fact. We've been doing full re-wires on Broncos on a regular basis for about 15 years now. Started off slowly, with Centech having a head start on Bronco-specific harnesses, but really ramping up in the last 10 years with seemingly everyone and their cousin installing EFI and having trouble with the old harness, fixing PO hacks, and even doing full frame-off restos on a Bronco.
Lots of discussions.
Some of the recommendations may depend on your experience (and relative fear, or lack thereof) with wiring.
So what's your anxiety level with wires and voltage?;D
Paul