I purchased an Injector a while back, one with a Bakelite handle, bought some of the Chinese blades on the auction site, and proceeded to have one of the worst shaves ever. First pass, there was hardly any reduction, so I finished with a DE. I set the Injector aside, thinking it might not be for me, YMMV and all that.
I picked it up one more time, thinking the problem was technique/prep, first stroke, and the pulling/tugging was terrible. Set the razor on the shelf and stayed in DE land until last night.
My wife was talking to her hair stylist about my new hobby of shaving, and probably making fun of me, my small collection of razors. He gave her an Injector with a Bakelite handle to give to me. I wasn't too excited about hte razor, but I cleaned it up, and decided to compare it to the one I already had, I noticed some slight differences, so they must be a year or so apart, but the biggest thing I noticed was the blade. The blade in my Injector was, to the naked eye, visibly ragged! I borrowed some reading glasses, and low and behold, a bad blade!
I put in a new blade for this morning's shave, and let me tell you- that is a nice razor! I got a DFS in two passes.
So, what's the lesson? I guess you can't judge a razor on one blade, if a razor doesn't work well, try a new blade, it might help!