If you have two good corners, go with the Professional Series seven π loudspeakers. I use them with SET and ultra-linear PP amps, and just love them. They've been my favorites for a long time, since the 1970's. And they've had incremental enhancements over the years too, so they're the best they can be.

If you can't commit to using corners, you might go with the Professional Series four π bass bin and the midhorn, tweeter and crossover from the seven π.

The standard Pro four π is very nice too, being a DI matched two-way design.

In each case, the woofer is tuned slightly overdamped, so bass rolloff is slow and smooth. This makes a nice conjugate for room gain, and won't let bass become boomy even in "live" rooms with solid plaster walls like in some European flats.