To the OP, that website in your post has some nice knives but for me, they are more for show then using in the field.
Neo made an excellent observation, something like "there are as many ideal knives as there are people".
To explain, we all have different hand size, grip, strength, eye sight, etc. These factors alone make it difficult to recommend the ideal knife for anyone. For example, for me, the Grohman knives handles are too small, I've got big hands and to use a handle like that is not as comfortable as a bigger one. Does not mean there is anything wrong with the Grohman's, actually look pretty good, just not for me.
About the only commonality I can see in selecting a knife is steel quality. I think it is important to buy a good quality steel. Not too hard or it is difficult to sharpen and not soft so that you are frequently touching the blade up while dressing an animal.
At this point in time my hunting knife of choice is a Knives of Alaska, Elk Hunter with the D2 steel. And even that fine knife is not perfect. The steel holds an edge very well - I can usually dress a moose or elk without touching it up - but it is work to get a good edge on it.
A knife is a tool, so choose accordingly, maybe not the pretty ones on that website you posted, rather something with a good grip that works for you, a blade shape that is good for dressing critters, and finally not too long. 3.5" to 4.5" seems about right for dressing animals.
A parting thought, get it with good steel and a way to sharpen it that you can use effectively.