Re: Do rear channels really matter that much?
Absolutely. I agree with David D. Have always had pretty much matched speakers all around, even since quad days when I had four of the Philips self-powered mini-monitors. Now have identical Von Schweikert VR-2s all around except their LCR center. But will probably soon upgrade the front L & R to VR-4 Jrs. which will still match well with the VR-2 surrounds. It's not just with discrete 5.1 - the soundfield is more seamless with ProLogic II as well, which I use frequently - even for my many Ambisonic UHJ recordings.