Has anyone purchased and used or tested these yet? Some claim to withstand currents of up to 200mA. Do they really produce 5 or 10 times the light output of a standard 5mm, 20mA led?
Do their temps remain stable enough that they don't require constant current drivers? The specs provided by sellers on eBay leave much to be desired, as usual. The forward voltages are often quoted at 20mA current, making me wonder what they would be at 10 times as much current.

