Good Hop-Up

Hey all, I was just wondering, Who makes a REALLY good Hop-Up Bucking? I want to replace the one in my KWA, so it needs to better than that.
I already wasn't very satisfied with the Hop Up in there, and then I'm pretty sure my Local Shops Gun Tech really screwed up th Hop-Up when they put my TBB in...
So, I decided to get another. I have $30 dollar credit @ ASGI. Lets see some Linkage!!

Kings Arms
DeepFire
Guarder

Have all served me well .

Thanks a lot. I'll just sift through those and pick out the most expensive one

firefly and nineball are my favorites