Yes, I won a pair as MTM in May of 2015. They were good and customer service was great. However, after going though 3 sets, I need to look at something else. I had high hopes for the last set as they were clearly redesigned, but alas, it was not to be.
I owe Diode Dynamics a public apology. Their bulbs did NOT fail. They simply developed a poor connection causing the problem. I discovered this while replacing them. A bit of wiggle-wiggle and tightening of connections, and they're functioning as good as new. The prior ones did fail, but the "Newly-upgraded (Fall 2017) constant-current circuit." ones are holding out.
While the socket connection they make could be improved, I'll note that the replacement LEDs I started to install were worse.
So, anyone considering an HP3, can buy with confidence they won't fail prematurely.