My theory is that for almost any [cool] notion you can come up with, there's already a whole group of people in some corner of the internet who have tested and debated which, why and how the best are are best, and who own the 'guide model' - which likely costs 10x to 100x more than I would ever be able to spend. This goes to a myriad of things, from bows to tablesaws, from canoes to sunglasses, and probably goes double for flashlights, knives or shooters: any boy-toysWow. I just posted this exact thread...I should have looked first, but what are the chances of two people having the exact same thought? (Apparently pretty good).