I have a pair of Charney Maestros with Voxativ drivers which I picked because I needed something relatively compact intended for corner placement (i.e., not Klipschorns). Great bass for the listening I do/my preferences, and I can only notice the very lowest of the lows missing on a couple of reference tracks. And they go way louder than I could ever want or need on 8 watts of 300b SET power.
I don't have experience with other single driver speakers.