I like being able to mention great vendors.
Based on my one business deal with Mr. Injector (so far) I can definitely recommend him.
Very quick to respond to email (he prefers email over phone), very knowledgable, very reasonable on price, and includes Jolly Ranchers in the orders. Even threw in a couple of o-rings and miscellaneous injector parts he thought I might need, and that was VERY fair for what he charged me, and what I was buying. Also shipped extremely fast.