most of the UM and Roden kits are cool, but i built the marder 3 and also the panzerwerfer from roden. i hated these kits, the panzerwerfer was ok, but the marder... omg the tracks where crap, half plastic half resin, and the resin parts where smaller than the plastic parts of the track, that looked ugly so i gave it to my dog to play with.
but when i see your models, i think i will go for some of the UM kits now....have to order!!!!
oh yes, and your panzerwerfer looks genius! the chipping is awesome!