The problem is an LED with the lumen output of a T8 is quite expensive and the lumen per watt isn't much better. T5 is even more efficient that T8, although T5 is still on the pricey side. What is the Lumen output of the 45W LED fixture vs. the 75W T8 fixture?
LED is very effective at spot/flood lighting because it does it "natively", where other technologies are omnidirectional and rely on reflectors for light angles.
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