I am ready to upgrade my 20 year old Cerwin Vega 3-Way floorstanding speakers. After reading all of the reviews and posts here, I would probably like the M50s or M60s. Most people here say go for the 60s, but my living room is only 15' x 12' and I'll be sitting 8' from the speakers. Would the 60s be too much for this room (w/ an Onkyo TX-595 75W/channel receiver)? And if I get the 50s, will I miss the mid-range of the 60s (and bass that I have on my CVs)? Thanx.