Just finishing my basement and looking at doing all in wall speakers. Been looking at JBL SP6ll 2-way or Yamaha natural sound 6.5 3-way. What size speaker is usually recommended for in wall 5.1 setups?? i see the make a SP5, SP6, SP8. These speakers will also see alot of music so i would like for them to sound good for dvd and music. I am not working with alot of money. Thanks for any help