Both injectors appear to work as well as each other, we have great results with either so to say one is inferior to the other is rubbish, one has been around for a while so has a more well known name. We do not push any 1 brand of injector on a customer or any other product for that matter, they make their own choices, some are informed well before they come in, some are misinformed by some of the rubbish that gets posted by people that think they are informed but are really far from it. In my shop, the customer gets what they are happy with.