CREE-XPE vs Bridgelux
Bridgelux is cheaper than cree but both companies have a good reputation for the LED lights
Cree wins the efficiency and output battle however bridgelux wins in build cost and output per $$$
Bridgelux is 10-15% less efficient per watt per diode compared to cree. While cree is 30-40% more expensive.
Bridgelux white LED's have the ability to reach 18,000k while cree can only reach a maximum of 10,000k.
In the end it comes down to personal choice, after factoring in the kind of tank you are running, the size of the tank and the penetration needed.
Links to data sheets
Cree Data Sheet
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