I hate to rain on this parade, but the OP said he wants a 2 channel system so I sure hope he has not bought a Marantz 5007 yet because that is an AVR. Not really suited for music. Not really hi-fi either. And why are you looking at another AVR? Proper 2 channel stereo reproduction and HT are two different worlds.
When randy-11 suggested Marantz he also said they have several levels of gear - good through audiophile. An 5007 may be good for a small HT application but its is never going to drive Vandersteens or Maggies. The true hi-fi series Marantz offers is their reference series and they are built in Japan. This is the audiophile gear that can compete with the best gear out there. All the rest is mainstream HT stuff built in China. The 5007 being one of them. And will be no better than your current Integra.
My suggestion is not to buy a thing and get educated. Learn about the two key specs of a speaker - Impedance (how hard it will be to drive) and
sensitivity (how loud it will get with a given amount of power) and how these specs relate to the amps power output into given loads.
When randy-11 suggested Marantz he also said they have several levels of gear - good through audiophile. An 5007 may be good for a small HT application but its is never going to drive Vandersteens or Maggies. The true hi-fi series Marantz offers is their reference series and they are built in Japan. This is the audiophile gear that can compete with the best gear out there. All the rest is mainstream HT stuff built in China. The 5007 being one of them. And will be no better than your current Integra.
My suggestion is not to buy a thing and get educated. Learn about the two key specs of a speaker - Impedance (how hard it will be to drive) and
sensitivity (how loud it will get with a given amount of power) and how these specs relate to the amps power output into given loads.