I prefer the English head, for the same reasons as others have posted about losing the head of an Irish head. Of course I have used the English heads for so many years, that it would be teaching this old dog new tricks that has found no need to change. Kind of like, if it isn't broke, don't fix it. I adjust all my English head leather shot flasks quite easily. Since I don't trust the numbers on any of the shot flasks and that stands for any style, I weigh the shot that is thrown by the flask head. If it is too much, I get some proper fitting brass tubing and make a snug fitting sleeve between the two gates on an English head.Just cut the length of the sleeve to the amount of shot you wish to throw and you have it! Simple and easy and it works for me. I am sure there are very good reasons to use what any style that any of you use. The only thing I can say it get one of each and use what suits you.Powder,I use a powder flask.