push experience
I have had three good experiences with push. I have two rp3's and a talus fork that were done by them.
#1) I could not feel any difference on the 3 settings on the rp3 that came with my motolite. I talked to titus and found that the rp3 was valved for an average 175 lb rider. Since that aint me, I had push rebuild it and valve it for my weight and riding style, and the difference was significant. I think if you are an "average" size dude, then it probably wont make much difference.
#2) I also had an older "classic" blur that had a frame crack, which was replaced with a blur LT frame by santa cruz. At that time fox did not make the proper length rp3 that i needed to get the full travel from the blur LT, so I bought one from push, who modified the stock rp3 to the longer stroke to get the full LT travel (along with mods for my weight, riding style, etc).
#3) Lastly my older talus fork was in need of a rebuild, so i had push do it and it came out great. Conversely, I had another fox fork on a different bike rebuillt at one of the LBS, and the experience was not so good.