As stated earlier, it is probably your blade. A sampler pack is definitly the way to go because the blade that works for one person may not be the best blade for another. Also, it has been my experience that some blades work better in particular razors and not so good in others so it's not always accurate to say a certain brand is "the" blade to get, too many variables to consider. Derby's are a perfect example for me. I tried them in my various models of SS's, open comb, etc and couldn't get a decent shave without irritating my face. I didn't see why they were considered in such high regards. Then I put one in my Fatboy and got the most amazing shave ever. That is the only razor I use Derby's in now. Prior to finding that match I was never going to use Derby's again. So try multiple brands and see what works for you. Your pre-shave prep sounds great. The only thing I personally would change is the shave itself. I find that WTG, XTG, and then ATG give me the best, smoothest shave. It's the ATG that puts the finishing touch on it. Good luck and don't get discouraged, it takes time.