I did listen to both the NAT Magnetostat and Magma SEs a few days ago. Compared to Jadis in my system, they were more clean and had more resolution, and each instrument sounded more rounded and stood out. I loved the Jadis JPL Plus Ja 100 I had as well. The main difference in the two was also that Jadis airy, while NAT is more transparent, like it's not there. The key difference happens on orchestral where NAT is cleaner. Jadis is more tubey. Both NAT pre and power were incredibly heavy. I enjoyed both. The Magma SE is just too hot to have in summer though, so that's a dealbreaker