I have been using these bulbs for some time as well. Very pleased for the price and a decent product.

I have had a bad bulb before and customer service is not very good in my personal experience as there wasn't any offer to replace the bulb because they blamed my ballast...which works fine...lol. I did not make a big deal out of it though....one bad bulb out of 6 isn't so bad at that price, which is about the price of one from many of the top name brand companies.

I still buy bulbs from them and like them.