Best?!?!?! Eye of the beholder kind of thing...
It also matters what you consider a "laser" and what you want in a knife.
For me, I LOVE AEB-L and I really like the Richmond Laser profile, grind, F&F, etc. So, yes, it's the best "laser" on Mark's site....in my humble opinion.
Steel matters a lot to me. I'm not a steel snob per say.....but....I am a knife maker, and I've been using high end kitchen cutlery for a lot of years. In that time and through my knife making, I've developed preferences and I can tell the difference between a lot of steels. When I tell people to stop focusing on the steel used, it's typically because it shouldn't be your main focus. Grind, HT, profile, handle comfort, etc. all matter more than the steel UNLESS you're after a very specific trait in a knife. Almost all of the steels used in high end cutlery are at bare minimum very good...will take a great edge, and hold it better than any soft steel junk most people are used to.