Pioneer AV v Soundbar?

I have an old Pioneer VSX-519V AV receiver, 5 Jamo speakers (2 fronts, 2 rear and centre) with a sub on the side supporting 5.1 of course.

However I have never set up the rear speakers in my room and can't be bothered running the speaker wire and mounting them.

Now that i've upgraded and wall mounted my TV to a 65" Bravia. I'm looking at whether i should stick with the Pioneer and Jamo speakers or move to a Soundbar, and if so, which one in the $500-600AUD range