Synergy is a big part of configuring an audio system. A combination of good components can sound lousy if each one contributes a common defect to the sound. For example, a good preamp can be a little bright, and a good amp can be a little bright and a good speaker can be a little bright and the room might be reflecting a peak in the off-angle response back at the listener. The combination would be unlistenable, but each component could be fantastic in the right environment. It's nice to have access to several alternate pieces of equipment to see if a different combination might be a step in the right direction. Also, if you can scrounge up some sound absorbing materials (or maybe buy a couple 2'x4' insulation panels) and place them at the first reflection points for the tweeters (draw a V between your listening position, the wall and the tweeter), you can get an idea of what treating the room can do for you.
Anyway, there is no speaker that is optimal in every situation. Sometimes other things need to change too.
