"now totally confused"
Bart
I would be a little wary of the Grizzly Japanese chisels as they have had some negative reports from dissatisfied users. Apparently the steel is quite soft and they do not hold an edge for long. Similarly, the new Marples, since the company was taken over my Irwin, have come in for similar criticism.
All you are after is (1) decent steel that will hold an edge and/or resist chipping out when used for its intended purpose, and (2) a chisel blade that is designed to do the work you want it to (whether to chop, pare, or lever chips). Not all chisels are the same in these categories. There are some good all-rounders (like the Witherbys and LNs), but then you must recognise their limitations and not go beyond that.
Regards from Perth
Derek