Every receiver in the x007 line has the features you list above. If the build quality concerns you, then keep in mind that the 3007 and 5007 use separate power supplies for the amp, preamp, and video processing stages and are more like separate components in a single chassis than the 1007.
The Onkyo/Integra pre-pros are basically the receivers with the amplifier stages replaced by a balanced output stage. If you look on the back panels, the layouts are almost identical, with XLR jacks where the speaker binding posts would be on an AVR. I think it is very likely that all of the other circuitry is substantially the same, if not completely identical.
All receivers are cheaper in part because AVRs are a mass-produced commodity that sells into a market that is extremely price-sensitive. This encourages lower MSRPs from the manufacturers on these units and encourages retailers to offer them for sale at substantial discounts. The pre/pro market is much, much smaller than the AVR market and tends to sell to people who are much less price sensitive. This is at least part of the reason why pre/pros have generally higher prices.
The only way you'll really be able to tell for sure if the sound quality is very different is to get an AVR and a pre/pro and compare the two with material that you are already familiar with. That should help you understand if the difference in price is worth it to you.