My quick take:
1. Emotiva
Pros- Sometimes lower cost (when compared apples to apples on features),Dirac (some think it's better than Audyssey or ARC, some don't).
Cons - Infamous for bug issues, when members complain on EMO forum they get banned, perceived as value-brand, not high-end, HDMI compatibility
2. NAD
Pros - Name brand, perceived as high-end
Cons - Reliability issues, cost, lack features, HDMI compatibility
3. Anthem
Pros - Name brand, perceived as high-end, ARC (some think it's better than Audyssey or Dirac, some don't).
Cons - Cost, HDMI compatibility, ARC difficult for some to set up.
4. Denon/Marantz (DM)
Pros - Name brand, Audyssey (some think it's good, some don't),frequent big sales
Cons - Reliability, HDMI compatibility, bad remote app for iOs and Android.
5. Yamaha
Pros - Name brand, most reliable brand, only major brand that extensively tests for HDMI compatibility, best remote app for iOS and Android, quick easy adjustment for Subwoofer and Center Dialogue trim levels.
Cons - Too many DSP modes, YPAO sucks, Good4it could not get his WiFi, Virtual speakers, Wireless speakers and sub, and Music Streamers to work 100% on his RX-A3080, usually not on sale like Denon.
6. Onkyo
Pros - Cheap prices
Cons- Reliability, HDMI compatibility- just sucks, don't even think about it.
7. Sony
Pros- Best 5 YR warranty on their ES AVR (Bryston is only other brand that offers a 5 YR warranty on their AVP),works great with other Sony products (TV).
Cons - Lack features, don't make any Pre-pros (only make AVR),not highly regarded in the AVR world.
8. Pioneer
Pros - Prices
Cons - Reliability, lack features, HDMI compatibility, associated with Onkyo