I was given a demo of the biggish newish Genelecs a while back, which was very impressive. They're good, well-designed speakers to start with. Helped a friend set up his KRKs with the little room optimizer thing they make, which had some effect. It's totally automatic and operates in the LF only.
The Genelec system is far and away the most impressive I've heard to date. It's optimized for each speaker, and control can be as automated or as manual as you want it to be. You can know exactly what it's doing all the time.