I hope it actually posts this time.
Benchmade:
Benchmade is just a great company. They make all of their knives except for the red class models at their facility in Oregon. They have innovative designs, good materials, excellent quality control, super customer service and lifetime warranties. They will also resharpen you BM knife for as long as you own it for $5 a pop (they won't resharpen serrations). That's a good deal for people like me who have questionable sharpening skills. I wouldn't say Benchmades are better than all other knives, but they are definately among the best.
The Griptilian:
The Grip is popular partly because it is the least expensive BM that uses the Axis lock, and the Axis lock is arguably the best lock out there. It is also an all around winner with great ergonomics and comes in a variety of models to suit any taste.
Points:
Tanto points are seen on many combat style knives because they make for a super strong point and stab very will. The drawback is that, especially on short folders, they take away from the belly of the blade. That is the part of the blade that you will be using most if you are doing anything but stabbing, prying or digging. As was pointed out earlier, some keep the secondary edge dull for prying and digging. I can see the utility in that but much prefer drop or clip points for my own use. They can still stab but give you more belly.
Black coated blades:
Black coated blades are good for sneaking around without reflections from a shiny blade giving you away. That is not a feature that most of us will need. Coatings also prevent rust. That is more of a concern with carbon steel than stainless. Any coating will sctatch with use but will not usually flake off. If you are picky about the appearance of your knives and scratches are going to bother you, I would stay away from coated blades. If you are going to get a carbon steel blade but don't want to oil it, consider a coating. Scratches look better than rust. If you are concerned about a shiny blade reflecting light, you might look into bead blasted blades.
I can't help you with the CRKT M16. I have never owned one. I do know that CRKT enjoys a good reputation.
If you want to do some learning, check out
www.benchmade.com and
www.spyderco.com Also use the search function on this forum.