ns_kit7 is far, far more dynamic and expressive - but a different timbre. Rock Stock has some very good sounds - and you can adjust the room/close mic balance. I do like ns_kit7 because
it sounds less processed, too... But this is very playable and, as I've got the snare pack add-on, it's fairly adaptable.
Guess I was getting bored with the ns_kit7 sounds more than anything. I must actually try the ns_kit7 brush kits, too, and see how playable they are. I've got Native Instruments Abbey Road 60's Drum Kits in the post, too!