I have Dynaudio Contour S3.4 modded with the Esotar2 tweeters found in the S5.4. They are fantastic speakers but like an amp that can produce lots of current on demand.
I would also keep the subs to go with them. I used a pair of REL R-328 subs with my Contours. Then I replaced the Contours with the C2 Platinum I have now. I’ve been using REL S/510 subs with those and just bought two more pair to configure a REL six-pack line array.