For a single room system, the Denon and Yamaha. The Onkyo's had some serious initial quality control problems which seems to get better. Denon is really set up better to do multi-room and will probably sound a little better on music, but Yamaha has a definite advantage in HT. Also consider HK and Marantz. Marantz btw is Denon sister company.
OP add the different types of formats and functions intregrated into receivers and a explenation
Dolby Digital LIVE Technology
DTS Interactive Technology
Uncompromised Wireless HD Audio
Things missing in Preamp-Processors & Receivers
Premium dual differential DAC implementation on all channels (quad dual differential in 2CH direct stereo).
Subwoofer output with independent bass management and independent level control in 2CH Analog direct mode.
Channel trim accuracy +/- 0.5dB.
Digital delay accuracy +/- 0 .1ft increments.
DSP processing in conjunction with a microphone for automatic level and delay calibration and room correction.
Internal bass test tones from 200Hz to 20Hz in 1/6 octave increments for each channel, and all channel pairs with and without subwoofer.
Variable cross-over settings from 40Hz to 160Hz in 10Hz steps and selectable filter response.
Defeatable notch filter for subwoofer LPF at selectable frequencies common to typical room modes (IE. 60Hz, 120Hz,etc).
Three high bandwidth (100MHz or greater) component video inputs and two monitor outputs.
Independent channel trim settings for every input and every mode of operation.
On the fly group delay adjustment for LPF on sub out.
Defeatable +5 to 15dB gain boost for subwoofer channel on EXT analog Inputs.
Defeatable bass management and digital delay compensation on EXT analog inputs.
Two sets of EXT analog inputs for provisioning of DVD-A and SACD.
Adjustable sleep mode (30, 60, 90 min).
Composite and S-video up-conversion to component video.
At least 5 coax and TOSlink digital SPDIF inputs (fully-routable to any input source)
Multiple firewire interfaces and/or provisioning for HDMI.
Option to up-sample 16 or 20 bit digital inputs to 24 bit and up-convert sampling rates.
Multi-room / multi-source capability.
Virtual 7.1 channel DSP simulated modes for 5.1 channel speaker configuration.
Super bass mode to combine bass from main speakers set large to the subwoofer.
Retainable power up master volume level setting.
Auto power on when input signal detected.
Ability to disable 80Hz setting for all crossovers when engaged in THX processing.
Defeatable THX post processing and/or boundary gain compensation.
Circle Surround decoding (SRS)
Dedicated, amplified channels for front effects for DSP modes.
High current (500mA) 12V triggers with selectable polarity.
Ability to bi-amp the front main channels in a 5.1 set-up with the un-used rear center channel amps.
Ability to bridge front main channels with a pair of surround channels in two channel direct mode.
Edited by Spooony - 5/22/11 at 4:47am