I would never use that Yamaha for studio or live.. Not that it's not ok, b ut there are way better mixers now days.
Bachus I wouldn't consider LS9 comparing to the new mixers these days.
Basically you have few really good choices here. Alen&Heath QU16, Soundcraft Si Expression, Behringer X32(producer or Compact) if you don't need that many channels.There is also Presonus Studiolive but the other three are much better mixers right now.
I personally have X32 Producer and I love the way it sounds. Maybe the best sounding one out of these three is Q16 if you want it for live. But, X32 has way better routing inside. Basically you can route anything anywhere. It has great effects too. You will not make a mistake whichever one you choose.It all depends on your needs.