Over $200 is not quite in the "affordable" range for a sound bar.
Good idea for a sound bar of that Sony?
I have a sound bar and like it, no surround speakers. Mine is a $100 Vizio one that I got for about $50 used, been running it for about 2 years now, sounds great although for real movie BOOM you'd need a sub with it. Read a bit about the Vizio bars, could save you a few 100 to go with a lower brand name that is likely to sound as good.