Another factor to consider is where the speakers will be located and where you will be listening from. A very specific "sweet spot" or a broader range of listening locations?
If the later, then wider dispersion or omnidirectional speakers would work best for sound stage and imaging, if that is of value for you. Ohm Walsh speakers (www.ohmspeakers.com) fit the bill affordably for many in that case.
The tonality of the OHMs (modest efficiency) is more like Vandersteen, somewhat laid back and balanced top to bottom...very coherent and non-fatiguing... with very good dynamics, especially with a well suited amp.
OHM Walsh speaker models have similar sound from bottom to top of the line. The main factor in choosing a model and how much it will cost is room size and need for extended bass in larger rooms. Some models (the larger 5XXX line) are also adjustable and can work well in most any room.