Like most above me. Number one is reliability, which I assume you covered with function.?
Some people buy guns to shoot for fun, not just to carry them.I am still trying to understand why "looks" is even on that list. Form follows function kids - not the other way around.... Would you go along with the idea that the Dept. of Defense (formerly known as the War Dept. until Washington stopped declaring wars) should buy a specific type of cruise missile based on the way it "looks"? Madness....