Thanks for all your insight, I have looked at the Spydey and honestly don't like them because of the blade design, do they have some models without that hole in the blade ? ZT are super overpriced in Canada. I looked the CRKT Snap Lock Folding Pocket Knife, I really like the look But I wonder if it is practical in real life then my eyes got to the Benchmade 551 Griptilian Plain Edge, that looks like something for me. what do you think, anyone owns one ?
I don't have your hands and don't face your daily tasks. I also don't have your aesthetic sensibilities. I have my own hands, my own needs, and my own tastes.
I found that for myself, nobody could give me any insight on what I would find useful, comfortable and pleasing. I had to mess around buying more knives than I could count, and carrying them for a period of time. To my surprise, many knives that looked great felt like crap in my hand. Some that felt great in hand turned out to suck in use.
In my experience, there is really no good shortcut for individual experience.
I can tell you that the Buck 110 (aluminum frame) and Opinel 9 Inox are my hands down favorite EDC knives and that I prefer rear pocket carry to any of the alternatives. I can also tell you that I reach for one or the other based on different anticipated tasks for that day.
Most importantly, I can tell you that none of that has any bearing on what you'll end up liking.
Things you might consider...
Find a store near you or a knife show that stocks knives and handle as many as you can. Let your tastes guide you.
Spend money on inexpensive used knives to develop a taste and feel for different grinds, steels, blade shapes, lock types. Give away or resell the ones that don't work for you.
Read up on the philosophy and histories of the various makers. You may find that you have tastes to a particular brand because you think they stand for something you resonate with. Or you may be repulsed <cough>cold steel<cough>.