If you get a Greco, I will go along with the suggestion that you also get the optional scales with it. I bought one when they were on sale a while back and that's the first thing that I wanted to change. The handle made of two relatively thin pieces of metal. It's not like you are going to bend them, I just wanted a thicker handle to grab onto and I think that it would much more comfortable in the long run.
The second is the lack of a pocket clip, although I hear that they are going to offer a clip soon or they already do. I just don't like the belt pouch that comes with it.
Overall, you would be very hard pressed to find a tougher knife for any price.