I don't know that there's a bad one. Lots of Glencoe ones around here. I never bought one, a standard chisel plow works in bean stubble, if I was working ground that deep I never did it in corn stalks, which is where the disk chisel is needed. A standard chisel is around a quarter the price as a disk chisel, I never could justify the added expense.
I’ve got a Glencoe Soil Saver. 9 shank disk chisel. I just use spring points and get along really well pulling it with my JD 4640 2wd.
The place I used to work had a 9 shank Brillion. It had a box frame that was filled with shot/slag from the factory. It pulled really hard, but it never “floated” on top of the hard pan.
Reduced till is the trend and tillage equipment is pretty cheap.
A 9-point straight chisel is in the hundreds here.
A Glenco Soil Saver is in the low thousands. I paid $1,500 for one and put new chisel points on it.