I have had two sets of Cain Abbys. I let one pair go, and the 2nd pair is staying. Using the Abbys with the Cain Bailey fills out the bottom when needed. I use the speaker cable from the amp type of connection with the Bailey instead of line-level.
Sounds great at both soft and loud settings. Plays blues, jazz, country, rock, movie soundtracks, etc.
Much more full (Abby only) than the Horn Shoppe Horns I used a year ago, especially at low volumes.
My room is only 8' wide by 14' long, and I use the regular Fostex driver. I got the 2nd hand setup (Abby/Bailey) for $1,850 including shipping.
Sounds great with push-pull EL84 and single ended EL84. I'm keeping my Sam Kim Audio EL84 push pull amp and retiring from the rat race.
Good Luck!