It's been a while since I had the 8c. I remember I could never get the bass to sound right maybe it had to do with using the wall for coupling. I was also a bit nervous about them being a new company. The 8351 definitely don't sound small but they don't go down like the A700. The A700 doesn't need a subwoofer those things would shake the floor in my opinion to much. I had to dial them back a lot to suit me. They weren't as coherent as the 8c or 8351b. Getting older I wanted smaller speakers easier to handle which is another reason I sent the A700 back. If I would have spent the time I could have set them up right but my wife didn't care for them either to "in her face " was her words. I don't regret my decision the Genelec are the best speakers I ever heard in my house. They have a beautiful soundstage I can sit anywhere on my couch and they sound the same.
Thanks for this write up! I am also a huge Genelec fan and converted from big Yamaha floor standers to 8340.
Here is my set up. Until now I have been listening via my Yamaha AVR RXV775 for movies and music. Yesterday, I tried some thing different with digital input to Genelec for 2 ch music. I used a Raspberry PI3 as a streamer for Qobuz and connected to a Topping D10s USB SPIDF convertor. From D10, I connected to Genelecs via SPIDF - AES Cable. Played some nice Jazz tracks (like On vacation). I did not switch on the subwoofer. I was absolutely stunned by the Sound quality via digital inputs. The bass was so good in these 8340's that keeps me wondering if I even have to use a subwoofer with them. Ofcourse it is better because of reducing Intermodulation distortion. But what I mean to highlight here is the sound quality of Genelec. I was on heaven yesterday listening to my favourite tracks.
I can only offer my 2 cents to those who have not tried direct digital input to Genelec - Just try them and see the difference for yourself. Going digital is not expensive. My RPI was 50 euros and Topping D10 another 100 Euros. This set up will beat any other streamer with digital out combo that sells for 5 or 10 times the price I invested.
I wish I had a similar digital option for movies as well. I could get with a PC based set up. But then the booting and user friendliness of an AVR is lost for my wife and kids who are operating Apple 4K TV for movies via AVR (means Analog inputs into Genelec).