In the event anyone was curious, I foinally made my decision and purchased a low iron (starphire) 72" x 24" x 31" (230 gal) glass tank.
Thanks to everyone for sharing their opinions regarding this matter. I am happy to have the decision behind me. Fortutnately, I beleive (hope) the rest of my decisions will not be as painstaking. I have a farily clear idea of what I wish to do, base on my experience in the hobby. The only exception is lighting, but that is a subject for another day.
Thanks again, Keith