Well they definitely have a harder shell which will prevent some deformation, but when you get a chop its like a catastrophic chop and it explodes. Its similar to tourney paint, somewhat brittle and breaks easy. I got a couple cases a while back and wasnt impressed. I think thats why its only $30 a case.
I think the weakest link in these tacamo kits is the detent system. Its a tippmann style detent which normally has virtually no pressure on it, and then you add the spring pressure and now the tippmann detent which worked fine before cant offer enough resistance to hold just one paintball in place. So now you have the next paintball in line trying to push its way up and it starts to get into the breech. I think thats where the chops come from. Best paint ive had luck with is "RPS Competition".