Don't put "metal" into the name for your youtube channel Metal Effort and Metal Complex are one too many "metal" names already. Haha. Sorry but it's too easy to get the two confused imho.
As for your question:
The three most important things for me are blade shape, locktype and materials. Most important meaning the three factors that determine if I take a closer look at a knife. The blade shape and overall profile comes first, if I like what I see right from the start I take a closer look, if it's a back lock I am most likely opting out because I am just not a fan of of it, if it's something else I will inspect further. I like Carbon, Titanium, G10 and possibly wood for scale material, I really don't like any of the plastic/FRN stuff. I can see the pros with it, but it's just too flimsy cheapo feeling to me. Aside from that Fit and Finish is of course something that need to be right for the money, I can forgive some of the F&F stuff if the price is good, if it goes to a certain price range I will be more critical.