I have a pair of Monitor 10B's that I've owned since new in 1989. I'd like to find a pair of the flagship SDA's but haven't found anything. These are for music only (no surround system) and would like to have some more bass. I would consider getting some subs to add to the system or maybe its time to change and get a set of Lsi25's for $1300? Music listened to: Neil Young, America, Steely Dan, you get the idea. What have others done?