Well if I may jump in on the topic as I was on the same wagon a while ago, after some research (and some friend's advice from past experience) it appears that Autotech gets better results than KMD for some reason and also appears to have siginficanlty less cases of pump failure than KMD (almost 0). So between the 2 there is no question what to get if you ask me...
Now having said all this I went all the way and plunged in to the full APR pump just to be on the safe side and frankly I would like to have the option to change back to my stock pump (and resell the APR) if and when I choose to turn the car back to stock or sell it...
I realise and despise the fact that it is very expensive but in my opinion you get what you pay for...