I read the last post about 9mm vs 40 with a lot of interest. I also carry a Kahr (PM 40 for me). I read somewhere awhile back to always use the heaviest grain available, so I have been carrying 180 grain gold dots. I know bullet placement is the supreme factor but we are all looking for every advantage we can get when the chips are down. Do you favor speed over weight? What is your favorite pic of the 40 caliber bullets? 155, 165, 180 grain, or something else? I value your opinion on this subject.