Howdy fellows!

I've been trying to narrow down my options on folders, and thought I'd ask for the good, bad, and ugly on a few models. Any info would be helpful (especially "don't buy that one, it's fragile!"), in picking between the three......

I'm looking at:

KERSHAW 1630TBLKST CYCLONE BLACK TANTO ASSISTED OPENER

COLD STEEL LARGE TANTO POINT VOYAGER

CRKT PAT CRAWFORD TRIUMPH ASSISTED OPENING

I'm looking for a very robust general purpose knife in that length, style and price category if anyone wants to recommend yet another for consideration.

Thanks a bunch!