Thanks, John - I know i need a sub, from listening to 22's with Peter. Just hard to know if i could be happy listening to the 60's w/o a sub. I won't be listening in anything close to audiophile environment - just a living room with lots of hard surfaces, glass on 90% of a 30' wall, hardwood floors. It's cruel punishment for good speakers, but it's where i listen. Are the 60's much more placement sensitive than the 22s?