First deal post so go easy :)
I've been on the lookout for a soundbar with a separate subwoofer that won't break the bank. Noticed some older deals had expired on the Samsung HW-T450 and T550 but found the T650 on special. Tried a few postcodes and got free standard delivery to most states.
This is a step up from the T550, which was on special for $329 last month. I believe the main difference is that T650 has an extra channel speaker in the centre to enhance the dialogue, hence the higher price tag. Reviews seem favourable, although some say the volume is on the low side.
You could also try price matching at JB Hifi where it's going for the full $599.
Also available here for same price