I've been searching for a sound bar for the past few months, tested a few but the sound when playing music is not good. When i tested Sony HT-ST7 2 weeks back at SONY KLCC i was impressed with the sound it managed to squeeze out form such a simple setup.

So last weekend I went to SONY KLCC and bought it haha! My requirement is minimalist, I don't like those sound system with many speakers here and there.

I agreed the price is on the more premium side, but considering the design which pleases my eye and a decent sound, for me it's a good deal

One more thing, it sounds good in my living room maybe due to the walls reflecting the sound. At SONY centre, the sound is a bit echo due to wide open space I guess.

I am satisfied with the sound quality. Listening music via Bluetooth connection from phone is so convenient, music sounds good.

For movie, i mostly watch those 1080p "ahem" version, about 1.5GB to 2GB in size per movie. Don't expect true surround with this but it packs enough "umph" especially with action movie

The only con is the price which is expensive

There wouldn't be. This is because soundbars are basically 2.1 setups, any multi-channel source will just be downmixed into a stereo source.
After that, a soundbar's DSP (if available) will play that downmix sournce in virtual surround if the user enables it.

There are a few exceptions though, some soundbars do come with additional rear speakers for a 5.1 setup. If you have these, then yeah the DTS/DD 5.1 track would make a difference.