I'm a big knife guy myself, used a bunch, made a few. Ive used then for batoning, trail clearing, firewood chopping, shelter building, you name it.
Condor makes some pretty good knives for affordable prices in the chopper size though you might need to do some edge work. Their 10 inch Kukri does some solid work. Alan Kay used one when he won season 1 of Alone.
Could always look for used TOPS knives as well, they are pretty hard to beat for some hard core beating, but they usually have thicker grinds. These are more or less the affordable version of Busse.
The 240 skrama is a great affordable chopper from Finland. Not sure if the tarrifs have caused it to jump up in price though.
Definitely look for something full tang in carbon steel, 3v, or aebl if you are going to beat on it.
If you want to drop some serious coin, buy once cry once, a busse battle mistress or carothers should last a lifetime, my ASHBM is by far my favorite chopper and my carother Mc is my go to trail knife, but these cost a lot.
The junglass/rtak is a solid choice. Id recommend the esee over the Ontario, better quality, nicer sheath, unbeatable warranty.
A kukri from Nepal wouldn't be bad either at a very affordable price, but they tend to come with a pretty thick wedge of an edge. Ive used a few khhi and they have all been solid, more bashers than cutters though.
cold steel trailmaster is a solid classic as well. Had a san mai that was a beast. Might be able to find a solid deal on one.
3/16th thickness for a lighter, snapper chopper, and 1/4 for heavy duty. 5/16 if its got a full flat isnt bad either.
Hope it helps!