Technically Bargraphics and I had problems. I had 1 defective chip, replaced by RMA (took 1 week, due the RMA policy that I don't care for). Both Bar and I have had problems with the hosted service in the beginning and I had a failed miner which eventually got replaced.

I would have liked 24/7 support for the hosted equipment, but they were reasonably responsive. I would have liked a faster RMA policy, but again, my problem got resolved. The difference between Bar, myself and say Avenger is that we're real customers and we're expecting reasonable outcomes.