T6 Lighting?

Is anyone on here using or have used T6 lights?

I am looking at these currently: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=380026199932&_trksid=p2759.l1259

they look really good and the price is very low ...just wanted to see what everyone thinks
 
Avoid them. they're nothing more but low grade T5 knock offs. they have a much lower light output and the color shifts after as little as 3 months.
 
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