If you are looking for a cheaper than dirt with a better sheath
S&W Search and Rescue Knife, Model CKSUR8, SW-CKSUR8
What is it?
It's a CTD (okay, really made by MTech) rough use knife with a better sheath, for more money. If you can't find a place to buy it from, PM me and I'll tell you a place that sells them that I've done business with who worked out okay for me (your mileage may very).
I have 4 of the mtech version with the cheaper sheath. They slice well, hold an edge well.
I also have four of the mt-151's mentioned earlier. Okay knife, you'll need to sharpen it because it comes out of the box crazy dull. They are okay, but they don't make good choppers in my opinion. Not enough weight, of course, that could be a matter of preference because...
I have a Becker bk-9. That's quite a chopper, and I love it. It's currently my favorite knife to have fun with (until I convince the wife I really need that srapyard five inch INFI blade

It costs more. It was worth every penny I spent on it...
Hope this helps.