I like modern steels, the designs and the engineering involved - but I live in the UK. Which pretty much rules out anything like the above. Mostly due to the size and the lock, but It's not just the legality of it (which is important to me) it's the perception here. The UK has a serious problem with knife related violence. When I take a peanut out of my pocket, an SAK, a congress or an older small pattern; it isn't observed with nervous suspicion in the same way as something more modern is - I tried carrying a Spyderco UKPK many years ago and got nothing but grief.
The main point though, is that I like traditional patterns more. I love the look and the feel. The walk and talk of a well made slipjoint and the character of them.
To me, many modern patterns are quite sterile - perfectly engineered, each identical to its sibling. Traditionals have soul.