Which player models in CS 1.6 do you like the most?

I want to download new player models for CS 1.6. I saw such interesting models with Darth Vader or Umbrella Soldier. What kind of player models do you like to add more atmosphere to the game? I also saw on https://all-cs.ru/  that some models, such as Jack Skellington or Trollface, have a rather narrow body. Do I assume that it will be a little harder to hit me or is it just my imagination and there is no difference between them? 

Back in CS 1.6, I hardly ever use knives or just don't know how to use them in the game. Could you tell me when this type of weapon is most effective and which knife is best to take? Or maybe I shouldn't take it at all, because if I pick up additional weapons, my running speed may slow down?