Will I be dissapointed with Monitor 60's? Instead of going with 70's?

mingo

Update on previous message, it was getting late...
My main focus is on the best sound I can get for music for under $500.00. I listen mostly to Jazz and Classical music which is typically played on non-electric instruments and am looking for speakers that will provide a very "natural" sound.

As to using the JBL's as surrounds, good or bad idea?

Thanks