I'm getting the Igo-L since it's easy to learn & single coil. I'm gonna use it to test DIY & drip daily. A guy on ebay was suggested to me, he drills the tiny stock it comes w/. I think 5/64 seems to big & will be way to airy for me? I know it's preference but what size is good starting point smaller then5/64 but, still good lung hit? Tempted to just buy 2 @ couple different sizes. U