Sonos sound bars are pretty good, and their subs are also good.
We have a sound bar, 4 docks and a sub in my house and I honestly think its the best sound system i've heard for a house haha.
The only thing is they're pretty pricey, think its 2k for the sound bar and the sub as they dont come together, and the subs pretty big...
But as for tv's wait for boxing day sales if you can as I know JB Hi-Fi always do good deals on tv's on boxing day.