I need advice on bi amping


So I have a Citation 11 pre-amp into a Quatre DLH 100 amp pushing a pair of Veritas 2.4s and two subs. The amp and pre-amp and Veritas were all re-worked by Stan Sciban in KC, great guy. I have a chance to pick up another Quatre DLH 100. Can incorporating it into what I have give me more of what I want and if so, what is the best way to go, vertical or horizontal? I do not want to buy another crossover, the ones in the Veritas are excellent in my mind.
kshalfmann
Don't bother. Not if sound quality is what you care about. If tech is what you crave, to look cool in the eyes of guys who love gadgets and goo-gaw, then go for it. EQ. The more the better. 

If sound quality is your goal however then use whichever amp sounds the best, sell the other, and count your blessings you were smart enough to not get sucked into the vortex that is bi-amping.
what is the best way to go, vertical or horizontal?
Go vertical, put the amp close to the speaker, use shorter speaker cable.
What "more" are you looking for?
Bi-Amping can often bring some benefits if you are taxing the amp with bass, but with the subs, I would assume you are not pushing the amp very hard?

It's an old amp, lot has changed. If you feel you must have a new amp, but a better one and sell the Quatre DLH 100 while it has value.