OK PEOPLE
As for "the best chopper", thats a tough question. So many variables. Weight: too heavy & you fatigue faster, too light & you bounce off. Grind of the edge: too thick & you don't get good penetration, too thin & it will roll or dent or chip. Thickness of the steel: adds to weight & increases fatigue, yet it aids in splitting, batoning & prying. So, as you can see, there is no definitive answer. It's what YOU like.
I happen to have good taste in blades. I have not broke one yet. I beat the friggin heck out of mine. I do NOT throw them. I don't care if they break. If they are gonna break, I want them to break under controlled circumstances, when my life does not depend on it.
Features that are important to me: Full tang, full width tang, extended tang, choil-if it is a big knife, so you can choke up for smaller tasks, sabre grind-i feel it makes the knife a little stronger, 1095 steel-good stuff & reasonably priced. Sheaths: some are better than others but please do NOT base you knife purchase on the factory sheath. Custom sheaths are the way to go for a good knife. That being said, with a few simple mods, you can make a crappy stock sheath perform MUCH better.
I simply got a split D-ring from a hardware store. Used 2 pliers to bend it apart enough to slip the stock belt loop in, bent it back & added a 2 snap belt keeper.
It now allows total freedom of movement for working, bending, squating, getting into/out of vehicles, etc... The stock sheath on the BK4 shown here has that feature already, but when you use the 2 snap retainers around the knife handle, it becomes stationary.
Choppers i like of the ones i have: BK9, BK7, BK4, BK5, BK10, Boomslang, SP8, SP10, SP Kukri, Ontario 18" machete, Ontario 12" machete-modded by me. This is in no particular order. My personal suggestion: Get a BK9. It is a friggin awesome knife that does everything well, is not so heavy as to fatigue, yet cuts better than you could possibly think it should. Add a choil & some jimping &call it done.
Hope this helped you.