Pose is a highly personal thing.
I would just look at as many examples as possible to get a feel for what's available/possible and then when you find one for sale that takes your breath away, go for it! Only you can truly decide which pose is best!
Best of luck to you in your search.
P.S. Much respect to you for the way you handled the assaults of the one fellow here. You are certainly the "bigger man" in my mind!
Personally I like standing with mouth open showing the teeth. Here's a thread with different lion poses:
Mohammad, I think a standing lion shows how massive they are, and that the lion is the true king of jungle. Good luck to you sir, and please show us a picture of your lion in its final place in your home.
I am ready to take on all comers in terms of defending captive raised lion hunting. Bring 'em on!
I was told by my PH and others can dispute or verify this, but he said captive bred lions are more dangerous than the wild version.
My master plan is to hunt one of those CBL next year in the Kalahari, then find a legal lion on the secondary taxidermy market and that along with reproduction skull and claws will represent the memories of my hunt.
Mohammad I really like the one in your example but I would spend the extra to have a partially open mouth, showing those massive teeth. Not a snarl but more of a pant. See mine in the lion taxidermy thread