...I am planning to slowly upgrade the speakers starting with buying two towers...How important is voice matching?...I am planning a move and could end up with a larger room for the home theatre.
Decisions, decisions. I don't think you will go wrong with Polk, PSB, Energy, Klipsch, Paradigm, Axiom, AV123, Athena, KEF, etc. You may like the sound of all of them. They are good speakers.
But let me offer you my thoughts. Just another option to ponder.
First, a couple of independent reviews from a trusted Audiophile:
http://www.definitivetech.com/reviews/BP10SR.pdf
http://www.definitivetech.com/reviews/BP8SR.pdf
I love the sound of DefTechs in my own home and in the homes of my friends. I do not like the sounds of DefTechs in any HT stores. Why? They don't have good speaker placement and room acoustics in these HT stores.
I can get the BP10Bs locally from a DT dealer for $700 (retail $1,000).
Take-Home message from Julian Hirsch/Stereo Review regarding the BP10s:
1) 20Hz-20kHz +/-5dB @90dB w/m.
2) Truly oustanding speaker system.True Full Range Towers.