wLivermore?
The 12 in AK is my favored blade, although if I could only have ONE HI blade, it would be the 15in AK. I have a Pen knife, as well, but the weight-heavier chopping section, and the pointier tip make the 12in AK more desirable for the woods walking and local camping I do. It is not made to cut down trees, but works a charm for general utility. It is so much more than a belt knife.
It also is less conspicuous to those unfamiliar with large blades. After a bit, it is inconsequential on my belt. I can't say the same for the larger blades.
But, unlike Munk and several others, I do not use a blade for harvesting wood for home heating, nor for felling smaller trees on my property. Also, I'm at an age and physical condition where less weight is better.
However, I know I prefer smaller blades than most on the forum, so keep my opinions in perspective.
Whichever you decide upon, you will be pleased.
Do well.
Kis