I owned an earlier version of those Sony's-fine for HT but average at best for music. The Tsi's are very similar to the R150's but a little bit better grade of material not sure they are really worth the cost difference. I like my Polk bookshelf set up and own earlier versions of the R150 the R15. Nice tweeter and good overall sound. You may check to see if there is a pair of R15's in the second hand market in your area. With the money you save you could by a nice Polk sub to fill out the bottom end.