I run King shocks. They are definitely high quality! They just haven't focused on the Raptor market as much as others. Huck and I installed my Kings. He is a Fox guy and he was impressed with the King quality. Their 3.0 are very heavy and we'll constructed.
I do get what you are asking though. When I started researching shocks it almost seemed like there were 2 main options and 1 lonely third choice (King). I continued my research and ended up buying King. Several vendors run King on some of their trucks. SVC and TMX both have trucks with Kings. Outlaw does too I think but not 100% certain. Go look at any off road race and you will see tons of trucks running King shocks.