I have used the LSE so called 22K 250w de bulbs. Build quality was low, especially the metal ends & visually it was a 10-12K at best. Not even close to a 22K. Also the bulbs had zero markings on them. I sent them back and had them replaced as I did not feel they were 22K or even 14K's & the replacements were the same. I sold them off as 10-12K bulbs. They would have looked really good if I was looking for a 10-12K bulb. Very very bright as well!
I have another set of cheapies coming from a placed called Greatdel that has excellent feedback. I bought some 20k's off him Friday. Should be delivered this week. I do know the manufacturer actually prints 20K on the glass so we will see what I end up with. Also to note, they were ridiculously cheap. Like $30 shipped for a pair. Even if I only use them for emergencies, then they are worth that!