the 62, I have heard the 685 with the 62 center, I haven't heard the 61 center, but the 62 and 685's sounded decent. I have heard mixed reviews of the 61 also, haven't heard it for myself, but the 62 did the job... A good friend of mine has the 685/62 in his rec room powered y a denon avr, the room is around 300 sq ft and it all works..