I like a bigger knife than most, guess I watched to many Rambo movies as a kid.
I never liked the Havalon Piranta for anything but caping. I know it will do it all and I can make it do a whole critter, but I seem to take game when I need to get the processing done pretty quick. I mostly day hunt and want to get out at a reasonable hour after a kill. I like the Barracuda better than the Piranta for quartering, taking out loins, skinning, most jobs.
I tried the Outdoor Edge version I got for renewing an Eastmans subscription this year and wasn't a fan at first. The more I used it though the more I'm liking it. It's a 4" blade and sturdier than the Havalon. If I was taking one knife just for game processing, or going as light as possible this would likely be it. I have been using it on the ranch for cutting net wrap. I have been using the same blade for a couple months now, just hitting it with a ceramic steel a couple times a week and after 5 passes on each side on the steel it will slice a piece of paper really smooth still. We are feeding more hay all the time and I'm probably cutting 60-80 big round bales per week now. It makes little sense to carry a steel and a replaceable blade knife when hunting, but I'll be bringing the blades home to re-sharpen in the future, not packing them out and disposing of them.
I'm still a fan of having a belt knife. If I'm packing a belt knife and a steel, the replaceable blade knife makes less sense. I like the Battle Horse knives with high carbon steel really well. The Blackwater is a great game knife that is stout enough for camp work when it's needed. I bought that ceramic steel mentioned earlier from Cabelas and it only weighs 2.5oz. The 4" Blackwater and sheath weigh 5.7oz. Since I like having a stout fixed blade knife with me this combo is usually where I end up. I bet the Benchmade Hunt series is lighter and would work as well, this is just what I use. I have an easier time getting and keeping a great edge on a high carbon steel knife than the S30V or other super steel knives when I use them a while between touching them up on something more than the steel.
My hunting partner uses and old KaBar 2 bladed folding hunter knife that looks just like the Old Timer 250T and it works well too. It was his Grandpa's and he uses it for sentimental reasons. The 250T I have weighs 7oz but the weight is offset a bit by it having two blades if one dulls or breaks. The newer ones are not the quality of the old ones that can be bought used off Ebay. His knife holds a pretty good edge, but he likes that I have the ceramic steel in my pack he can use too when cutting up an elk or other larger critter. I don't like that the blades aren't a true locking design and I feel that invites injury when one is far from aid compared to a locking or fixed blade knife.