Wont be using some of it, but I knew that anyway. Since I was seriously considering purchasing anyway, decided I'd make use of the opportunity that did come up, so picked up the K13 Collectors Edition.

I knew NI had specials but didn't know much more than that and didn't expect one any time soon. I guess it depends on what genre you're going for, but I'm really considering carefully if I need to get anything else. In my view Logic has plenty of great stuff and certainly adequate to make really good recordings. I'd recommend looking there about integration as people have commented on that. Spent quite a bit of time on NI forums seeing what people are saying in general. If you like pads, well, they dont have them on this keyboard. I couldn't really try it out properly as the shop only had Garageband.

I want to go with an 88 keyboard and unfortunately the NI S88 didn't suit me at all, but when I tried it I saw how it was very well implemented with its software, with 2 hi resolution displays. Always stock Logic, so I'm pretty new to 3rd party and it was only because I'm looking for a keyboard controller that the software got my attention. I'm a long time Logic user but never had any 3rd party stuff. I've been looking at the Collecters edition, where they say it *almost* has everything they've ever done. Not sure which tier you're thinking of but I've been thinking along the same lines as you.

Komplete ultimate 11 logic pro x