Large Room which speakers?

How long have you been in the hobby?

Asking a question like this without providing the parameters that you need to work within is useless. You will get many answers that will be worth what you paid for them.

Oh by the way, I would buy the Raidho D3 in Burl Walnut or the Acapella Triolon Excalibur in Piano Black and Burgundy gloss.

If I had a large room I would go with Legacy Audio Helix or Whispers or the Magnepan 20.7...I don't though :(

I am in a reverse situation having the large pair of speakers but not the room.
JBL 4676-A (two-way system) Using the JBL 4550 BKA bottom cabinets.

I would recommend you read my review on the Lawrence Audio Double Bass Speaker on hometheaterreview.com for the details why this is a great speaker and might be exactly what you are looking for for your large acoustic space. I don't know if it would fit into your budget, however it would sound wonderful in your room.

How far you sit from the speakers is as important as room size. Also depends on what your idea of "fill the room" is. I would suppose the Hornings do have enough gas in the tank to satisfy most in a room that size, but still would have their limits.