H 16 jib cars

Hey guys. Does anybody have an opinion on the newer integrated jib car track as opposed to retrofitting with ,for instance, Harken roller cars and track? I am trying to decide if it makes more sense to buy a newer boat or go for an older one and replace the standard gear. Also, if you like the newer integral type, is it reasonable to retrofit a older boat with the newer front and rear crossbars?

Thanks in advance for any help.