I getting ready to replace all 6 of my injectors and had a few questions, if anybody can help. First I notice that there are Bosch and Mercedes original injectors available, and the price isn't much different. Does anybody have a strong opinion which one is best? Also which injector puller is best? I'm working on a 2014 Mercedes with the 3.0. I've watched a few YouTube videos where guys bought the wrong puller. I'm thinking the claw style, but not sure. I want to avoid all that mess and have the right tools ready. And lastly, I wanted to buy the small tool to clean, or ream the injector seats before adding the new copper seals. Any recommendation which one is best, different sizes? Can I get them on amazon? Any other pointers or links for this job would be appreciated.