I am currently running and have been running the stage 1's in my 05 for 20k miles, I have friends and family with common rails that don't run as smooth and good as my truck has since I installed the BBI's, i am a diesel tech and have been for 5 years, I work with cummins a lot and haven't Seen any company or injector that comes close to the BBI's. Injector's are the heart of a diesel and I don't see why anyone would want to use a lesser quality when it comes to injectors.. I have everything in my sig and have been running it like this for a while now, never had an issue with starting or running rough, I tow and drag race and drive this thing everyday, it always runs smooth as glass and i get around 22mpg with the smarty on level 9, (and I don't drive it real nice) my next step is to get it on the dyno for UDC tuning, I can only imagine it will run better and harder! I wouldn't recommend another injector after seeing and running these injectors, there development is top shelf and I wouldn't settle for less!