If electric is cheap there's really no reason to take the plunge considering how expensive the hardware is. I've never heard anyone complain about the quality of their buds under a 600w, and if you're getting a sweetheart deal on power from your electric company burn that juice down and crank out the nugsIf I had to pay those electricity prices I'd definitely be going to LED. But I don't so I won't.
I'm actually glad we got these posts showing variations in electricity costs. Maybe the guys telling me I'm living in the past by not spending a bunch of money upgrading to LED's will understand things better.