I have owned a pair of Acoustat 1+1 speakers for over 30 years (bought them used for $350 from someone that did not believe in using subwoofers). Essentially I have upgraded every component of my system over that time. Currently going through my digital upgrade phase.
Late last year I sought out upgrades to the Acoustats which were supported by a single Vandersteen 2W subwoofer. I listened to many in a variety of environments, but I never found any I wanted to test in my home. I decided the weak point was the Vandersteen. I looked at many including Vandersteen's newest. The Vandersteen approach of reducing the bass signal to the main speakers is ideal for the Acoustats. When they don't have to produce bass the mid-range and highs just seem to improve.
I decided I needed an excellent active crossover. Looked at the McIntosh (very poor), the JL (outstanding), and the SPL (also outstanding). Ended up with the SPL and a pair of Rythmik F12SE subwoofers. It may not be the most expensive set of stereo speakers, but I feel they are the best for me.
I have a separate HT system with five B&W speakers, a pair of 3D Acoustics (Rogers clones), and a nice sub. Very nice for theatre and TV. But I listen to the Acoustats 3-4 hours every day.