I have used all types of knives over the years. The bottom line in a decision, is whether or not you are competent at sharpening knives. It has only taken me about 30 years, but now, I prefer to sharpen my own knives.
I have tried the replaceable-blade knives and they work fine, BUT, the blades dull quickly. They do sharpen quickly, though, so I have no issue with them. I still have one and have sharpened all of the extra blades, as I was never real satisfied with the sharpness, when I got it. It is an Outdoor Edge. I traded a Piranta and an Outdoor Edge to Cushman, for an Outdoor Edge Swingblade. It is a fairly good knife, except that I am not real crazy about AUS8 steel. AUS8 is a common and inexpensive steel, holds a fair edge and is pretty easy to sharpen. Overall, a decent steel and moderately priced, that is used in a lot of knives. I actually asked the boss why they don't use a bit better steel and he told me that most cannot sharpen real tough steel, and they could keep the price more marketable with AUS8. Made sense to me and I like the durability of the Outdoor Edge products.
The best knife that I own, was made for me by a knife maker by the name of Cody Wescott, in Las Cruces, New Mexico. It is a large, heavy knife made from D2 tool steel. It has been a great knife and has been my preferred knife for heavy game. Cody still owed me two more, but I believe cancer got him awhile back. A truly fine blade smith and also was a good friend and real outdoorsman.
I have two SOG knives that I like real well. They are S30V steel and are pretty good knives. They are durable and hold a decent edge, but take a bit longer on the diamond to get it where I like it. They are smaller with 3-3.5-inch blades and work great for deer and antelope. I have also done elk with them, but prefer a larger knife for that.
I have a Puma Skinner, that is a fine production knife. It was a gift many years ago and has gutted a lot of critters. Puma is real good for a production knife, in my opinion, but I have not used a new one.
I think that if I was going to have a custom knife made now, it would be a compromise between the large, heavy D2 knife and the smaller knives that I have. For deer and antelope, it is irrelevant, as a good folder works great, but it is nice to have a bit more heft, when doing larger game such as elk, or moose. I like a bit tougher steel and would pass on the 440C, AUS8 types of steel that many cheaper knives are made of. There are lots of good production knives from SOG, Benchmade etc, that more than fit, though, without going the custom route.
Out of the field and close to a sharpener is a whole different story. I like my Bubba Blades for processing.
Just my opinion.