FWIW, I don't doubt Pioneer's ratings on the amps in the Elite series. Past units have tested well in reviews, and exceeded RMS ratings (albeit with slightly higher than rated distortion at rated power on all channels but the test gear the reviewers used might have limited resolution) and have even proven to be 4 ohm stable.
As far as capacitor ratings go, as previously stated, it doesn't make sense to compare the current Class D product to the Class AB amps. I haven't tested the power draw on either receiver nor have I measured the temperature but I can tell you that my ancient VSX-26 wasted so much power that it heated the room, and the top of the receiver was always hot, even at low volume. It ran so warm I kept the amp on to minimize heat cycling (to extend life by reducing electromigration, plus some old-school amp designers I know insist it improves sound quality - but I never noticed any difference through my old speakers). The SC-55 has been on all day - I stayed in to watch movies and have had movies playing at moderate volume (volume at -14.0 dB) and the receiver is only warm to the touch. It is obviously wasting a lot less power on the power rail side and I am very
pleased with the sound quality so I really don't understand why you need to make that comparison.
As far as I am concerned here is what matters:
- How good does the system sound?
- How reliable is it?
The answer to the first point is proving to be excellent. The second will only become apparent over time. Assuming there are not manufacturing flaws (counterfeit caps which are still
not out of distribution chains, cold solder joints like the VSX-26TX,VSX-27TX, and VSX-29TX had, etc.) I would expect that if the unit makes it through the first few weeks and doesn't suffer "infant mortality" it will last a long time.
There is a detail you might be concerned about: what are the chances that the lead-free solder they are using will develop tin whiskers? Even that hasn't been as much of an issue as predicted, but it has still only been a few years since RoHS guidelines have been in effect.