I am squarely in the "speakers first" camp. A good source will sound good in any room and many systems. The same cannot be said for a good speaker. You can't just plop panels, electrostatics, or horns, etc. into any room and expect success.
The speaker has to fit not only the room but the taste of the listener. And the taste of the listener defines the entire system. The speaker and amplifier combination is particularly critical so in some instances (e.g. user prefers SETs) the amplifier type will strongly influence speaker choice (or at least it darn well better).
Think of it this way. How long did it take you to determine the position of your equipment rack (including the source)? How long did it take you to determine the exact speaker position (assuming you aren't still trying to determine that)? The speaker and the room come first. And I strongly endorse room treatment be part of the equation.
The speaker has to fit not only the room but the taste of the listener. And the taste of the listener defines the entire system. The speaker and amplifier combination is particularly critical so in some instances (e.g. user prefers SETs) the amplifier type will strongly influence speaker choice (or at least it darn well better).
Think of it this way. How long did it take you to determine the position of your equipment rack (including the source)? How long did it take you to determine the exact speaker position (assuming you aren't still trying to determine that)? The speaker and the room come first. And I strongly endorse room treatment be part of the equation.