I'll start by saying that once I got these setup in my home (which is super simple) they work beautifully. By no means can you compare these to higher quality / more expensive speakers, but in that case you get what you pay for. At the price point these rear speakers, along with the reasonably priced soundbar are a great value!
CAUTION - do your research before buying just any Samsung rear speakers to go with your Samsung soundbar. My soundbar is almost 2 years old and when I went to Best Buy originally, the consultant assured me that any of the wireless Samsung speakers would sync with my wireless soundbar... Not True! After further research, Samsung used a very similar design over the years for both their soundbars and rear wireless speakers. Make sure the speakers you buy are compatible with the model number of your soundbar. Looking at the various models you'd be hard-pressed to tell the difference without looking at the model number on the back. If you have incompatible models you'll be stuck wondering what the heck you're doing wrong because the instructions make it seem so easy to setup (which it is once you have the right speakers!)