Yamaha soundboard are pants
The fact you can't even spell soundbar makes me disregard your post immediately.
I bought my Mum a Yamaha YSP-1400 a couple of years ago and was hugely impressed by it. The bass response far exceeded my expectations. If I was buying a soundbar for myself, Yamaha is probably the only way I'd go.
For the record, my own setup is built up around a Yamaha DSP-AX620, NAD C352 and B&W 603/601/LCR 60 speakers so I have fairly good idea of how decent audio equipment should sound.