overall quality and features that work well.
Build quality? Are there avrs where features are known to not work well (aside from defective units of course)? I've had a Pioneer with MCACC and have Denons with both Audyssey XT and XT32 and I preferred Audyssey, but MCACC also had some nice features.....more a preference thing.
Unfortunately most avrs come with that silly passive bi-amp feature. Most avrs are using class AB amps and are roughly the same efficiency. Is your Pioneer one of the ones with class D amps? They would be more efficient than class A, but I don't think that model is one of them. Not a significant difference in amp spec:
Specs for the 3300 from its manual:
Front:105 W + 105 W (8 Ω/ohms, 20 Hz – 20 kHz with 0.08 % T.H.D.)135 W + 135 W (6 Ω/ohms, 1 kHz with 0.7 % T.H.D.)Center:105 W (8 Ω/ohms, 20 Hz – 20 kHz with 0.08 % T.H.D.)135 W (6 Ω/ohms, 1 kHz with 0.7 % T.H.D.)Surround:105 W + 105 W (8 Ω/ohms, 20 Hz – 20 kHz with 0.08 % T.H.D.)135 W + 135 W (6 Ω/ohms, 1 kHz with 0.7 % T.H.D.)Surround back:105 W + 105 W (8 Ω/ohms, 20 Hz – 20 kHz with 0.08 % T.H.D.)135 W + 135 W (6 Ω/ohms, 1 kHz with 0.7 % T.H.D.
Specs for the 1130 from its manual:
Amplifier section (VSX-1130)Continuous average power output of 100 watts* per channel, min., at 8 ohms, from 20 Hz to 20 000 Hz with no more than 0.08 %** total harmonic distortion.Front (stereo) ......................................................................................................................................100 W + 100 W
Power output (1 kHz, 6 ohm, 1 %, 1 ch driven) ............................................................................................................165 W