I like the idea of Kessils and am not opposed to buying some if and when I have to return the LED lights I am currently using for veg. I'd like to buy a couple H350s and hang them in my 2x4 veg space. It would be quite a challenge and probably quite costly for me to flower using Kessil lights since I flower in a vertical room but for veg, I think the LED lights are hard to beat. I think Kessil brings the quality over a lot of panels out there too. Most are cheap, made in china, lights that have been rebranded and sold with high profit margins. These guys are not working off of quantity. The panels could be sold much cheaper than they are, IMO. I believe the Kessil lights could be cheaper too but I'm willing to pay a little more to buy from an American based company since I live here. Warranty means a lot to me.
Some of the LED panels, like the solar storm and soar flare lights, are still priced too high ,imo. I think the technology has come down in price enough for it to be time for better pricing for LED panels. It's just my opinion though.
Hell, People are building DIY LED lights that smoke some of the panels and fixtures you can buy now. And, for a lot less money. SomeGuy has built some bitchin white LED fixtures and they're kicking ass right now. He's got the wattage he was looking for and got it for about what a couple of cheap panels would have cost him.