Looking for some input from people with EXPERIENCE. I have a custom build that has a stock already but I am going to order a new McMillan, either the A5 or the A3, with the biggest difference I can see is the angle of the bottom of the butt stock. I like the look of the A3 better with a more traditional hunting stock angle as opposed to the A5 with the thumb hook. I have had the A5 before and I find the thumb hook is useless for me and it is harder to manipulate the elevation with the flat bottom on the butt stock. Anyone with any input that can shed some light on this for me? Going to order hopefully this week, I know it will likely be the end of the year before I see it, but it won't get here faster if I wait! Thanks!