Orrrrr...there's the Busse Ruck Force One to consider as well. If you can find one!
Same length handle as the AK, but with a tanto'ed camo blade the same OAL as the SR Rucki.
I like the balance of the SR Rucki best, by a slim margin, out of the AK, Waki, and Ruck Force One. Its fast, but if you want to be able to reach out a little further, the AK would be my second choice.
I can't speak for the Ruck Force, as I haven't been able to bring myself to break it in.
I will say, SR-101 may be becoming as appealing as INFI to me. With small, occasional micro chips that i can easily smooth up with a white ceramic rod, followed by a good stropping. And the Waki, while i love them all, may be my least favorite. (NFS!)
INFI is still my favorite, having proved itself against many obstacles over the last 10 years since I became an addict. I had many, now grail, blades in INFI. An NMSFNO, among many others I hate to think of, that I sold for something shinier, traded, or sold, to pay a bill or 3. Lol
But I was sure happy to get an SR101 version, as I know it's not going to fail me.
So, my choice would be the Rucki initially, for its balance and speed, or if you want to hang it on the wall, the AK is a nice blade, aestheticly good looking, and quite functional.
Only a couple of inches difference, depends on what you want to do to it basically.
If you get the Rucki, you can put the $$ difference in your new Busse kin addiction fund, you're likely to find that you need another, somewhat smaller, side kick blade to go with whatever you decide on.
You'll be happy with whichever you get, I'd bet.