I am a huge Machete, Brush sword/slimline machete, and chopper user! Use them about everyday. You will grow to love them and if you do a lot of wood processing, especially out in the woods, they will become a best friend!
I have quite a few right now, but my favorites are my 3V slimline machetes and my Carothers light chopper. They are the best team. The slimline for throne brush like blackberries, and the light chopper for wood processing and bamboo. The CPK light chopper makes quick work of even thick trees. Glad I got a backup, cause I use that A LOT!
I hear what you are saying about the small knives, I am eagerly awaiting my F2 4.1's! I bought a 7/7 as well to see if it will be nice to have an in between knife. We will see!
I would suggest buying and trying some cheaper big knives, see how it works out for you. For around a 6-7 inch, there are quite a few, this one has a overly thick spine, but works VERY well for a sub-$30 knife, the Schrade SCHF 37 Frontier with the rubber grips. It is a work horse! That is what I use when I know I am going to be abusing a my knife. Another good one for a "chopper" would be an Ontario 12 inch machete for 20 buck give or take, or go up in price to the Ontario RD9 or Ontario RTAK II if you want to try a true chopper.