Personally for this stuff I would stick with unbalanced. That being said, it really depends on the gear you have whether balanced or unbalanced will sound better. The reason I would go unbalanced is a purist thing, balanced circuits require either a differential amplifier or transformer to implement. Both of those items can have very distinct character, either good or bad.

I prefer to try to keep as few components in the system as possible when I can. Thus since unbalanced has fewer components (the diff amps and/or transformers) it seems to be a purer connection. That being said you might find the character from those items is something you prefer. You might also find that you can't tell the difference as some diff amps and transformers are extremely well designed and are pretty darn transparent.

If you are really concerned buy both types, try them both, and if you prefer one over the other keep that and send the other back. If you don't hear a difference, send back the more expensive set.