Though the article presented in the above post has much information, remember, it is one man's opinion. I have read other information from other sites that state, for instance, that 301 steel is superior as it has a chromium content of 18 and is a very tough steel. But from a quick bit of further research, I have found that 301 steel comes with different properties and qualities, based on several factors. It can have from 16 to 18% chromium. And its factor of toughness depends on whether it was cold-worked, forged, how it was hardened, whether or not it was anealed, whether it came as a bar, or sheet, whether it was mechanically worked or stamped, etc.
I have also read that a convex edge is far better than than is a beveled edge as the outside curve shape of the edge is naturally stronger than either the beveled, chisled, multi-angle bevel, and concave shapes. This is born out through simple physical laws. Also, The shape of the edge, and the the body of the knife from the spine to the belly is important. A blade with a thick spine leading to a sharp belly wedges through whatever is being cut, which increases the amount of force required to get through the material. This is important if you are cutting foods such as winter squashes (acorn, hubbard, pumpkin, etc.), or mellons. A blade that is very thin at the spine might not have enough rigidity or strength for tougher cutting tasks. A chisel blade tends to wander as you slice, making it difficult to carve very thin, uniform slices of cheese, or meat.
So dig a little before purchasing a knife. Look at several different sources of information. Then, determine the primary use of the knife, and what qualities you desire in it. This will allow you to make an informed decision.
I have my own reasons why I have the knives I have, and they fit my needs well. But your hand is different than is mine. Your arm is either shorter or longer. You are stronger or weaker than me. You have to find what works for you. And the best way to do that is research. I state about all of my beliefs, be they religeous, or about knives, or even cars, don't take my word for anything as gosple. Rather, learn from the info I have, and then find more for yourself.
Seeeeeeya; Goodweed of the North