Well I've had my Apollo 600w HPS for a few years now, with no issues. No problems at all. I've only had to replace the bulb once and I don't think they are the ones manufacturing the bulbs.
I just recently bought the Apollo Purple Sun 384w COB LED panel. So far it's working great, but it's my first grow with it and it's sitting next to my HPS so it'll be mixed results compared to growing with it a lone. Like I said though it's great so far, runs super cool, no need for extra fans and ducting. It draws at 180w. It claims to cover a 3' x 2' space, but if you are aiming for 25w per sq ft, I can see it covering more. I'm also new to LEDs so I don't have the most knowledge on them.
The company itself is great. When I recently purchased the Purple Sun panel they gave me a 3 year warranty on everything. If something goes wrong all I do is send them the panel and they'll send me back a fixed one that week. Or will send replacement parts, no questions asked, no fees or anything. I've heard great things about their customer service, which ultimately made me go with their product, and the fact that I've had my Apollo HPS for a long time now and have gone through a bunch of grows with zero issues.