Yes, the KA24E is a flat (nealry) top whereas the KA24DE is dished.
Pins, is one better than the other?
On the Rock Auto that price is per piston as well as the cost of rings on top of that! They are way expensive....I've seen sets of 4 for far less.
Catch of course is that I do not need 4, I need 6. I have considered buying three sets of 4 and splitting one like you suggested. Would prefer not to go that route though unless I have to.