Ohm has a long audition period so you can really hear their performance over days, weeks, and a few months. In my experience, the sound is great right out of the box, but seems noticeably to improve the more you play them. Up to a point, perhaps a few weeks, where the sound settles down and just sounds even better. It took me a month or more because I didn't listen very often.
I'll bet that Ohm knows from experience, very likely you won't be dissatisfied, so won't need to send back.
The current production Ohm Walsh speakers are also great for home theater audiences. You can hear the imaging across a wide sitting area so that many viewers can enjoy the spread of sound across and beyond the video screen. Even better for gamers too. And, I don't even need a center channel speaker, although Ohm makes those too.
I believe that adding a center speaker will improve what I hear beyond what I already hear for movie dialog. The problem is lack of space for placement in my current arrangement.