I have a McMillan A3 with Edge fill, and am currently waiting on another McMillan Game Scout with Edge fill. Overall I love McMillan stocks, and if you want to go ultra lightweight, you need the edge fill, or go with the Manners stocks that fall within the same 25 - 28 oz range.
I have a bell and carlson medalist (basically same as alaskan) with the aluminum bedding block and I am very happy with it. fit, feel, grip, performance. top notch. but it is not as light as the mcmillan or manners ultralights. But they are also more affordable and easier to purchase on various websites.
The nice thing about McMillan is you are custom ordering your stock. length of pull, color, sling studs, etc. I am very tall with big hands, so I love the tactical/pistol grip of the A-series. Although for hunting, where you mention shooting off trees, real hunting positions, the A3 forearm is just a little blocky for me (preference). That's why my McMillan on order is the Game Scout.... tactical grip with a more classic rounded hunting style forearm. Best of both worlds.
I looked real hard at Manners, and I really like the style of their stocks, but they do not offer a length of pull beyond 13.5" without upgrading to their very heavy spacer kit. For me that was not an option, but for a standard length of pull or shorter, I think their stocks designs are very good.
I have owned a couple HS precision stocks in the past, both with the aluminum bedding blocks, and overall great stocks. But I have two complaints. First, their aluminum bedding blocks add weight just like the bell and carlson. Maybe their new ultralights are similar to mcmillan/manners? Don't know about that. My second complaint is that in rainy/snowy conditions with gloves on, the HS finish felt a bit slippery to me when I was hunting with it. It wasn't awful, but it was not on par with my B&C medalist, or my McMillan. And maybe HS has changed their finish since I've had mine, I do think they make nice stocks.
From an accuracy standpoint, a good skim bedding job will get any of these stocks shooting your gun very accurately. It just comes down to how much money you want to spend in order to save weight. For all around versatility the B&C stocks are hard to beat for the price.
