They'll have to pry the HPS out of my cold, dead hands!
All I know about LEDs you could write on a rolling paper but I have read a lot of threads about them and guys are getting good results now that the tech is getting dialed in. Still too much money for me yet but maybe once all my HID lights burn out I'll get me some COBs or whatever is the best tech for the money then.
I need the heat in my grow space so there isn't much incentive for me to switch from the tried and true HID lighting I've been using for 35 years.