Denon DHT-S517 Sound Bar with Wireless Subwoofer

This is a review of the soundbar, but it also turned into a disappointed review of the HEOS system. First, the soundbar is impressive, especially at this price ($399). As someone used to smaller soundbars and regular TV audio, the floor-rattling bass and clear treble add an exciting, immersive dimension to movies. Music sounds spectacular as well, though it's played via the HEOS app, which I find unwieldy. Second, the soundbar disconnected spontaneously a few nights ago while I was cueing up a movie with my daughters. It wouldn't reconnect, and I watched the movie in frustration. But the next day, it reconnected spontaneously, as if nothing had ever happened. If it were a person, I'd call it gaslighting--an unhealthy relationship, or at least a major red flag. I may still keep it because the sound is so good for the price, but I have another week to decide. Finally, I had mistakenly bought this as an addition to my HEOS 1 speakers, which I had planned to use for surround sound. Nope: that's only possible with the DHT-S716H soundbar, which apparently has issues of its own. Couldn't DENON simply push a software update and make all of these compatible? I can see them all on my HEOS app, but no, they're ungroupable. As an aside: DENON/HEOS has great sound but frustrating, at times infuriating, software problems. After two years, one of my HEOS 1 speakers just quit working, and its red flashing light ominously suggests it won't be functional again. I spoke with a tech who recommended I e-mail them my invoice to see if it's under warranty. No response since then. I hate to admit I was wrong, especially when I've invested a lot of time, hope, and money into DENON/HEOS. I bought these speakers because of what I'd hoped would be versatility, quality, and a different approach to home sound systems. They're great when they work, but if I had a do-over, I'd look at SONOS, Polk, Klipsch, Nakamichi, Sony--anything else.