sorry to hear that buddy the OP swears by them...
inefficient? have you tried them? (I mean recently, not 2 years ago or even last year, did you get ripped off buying some cheap Chinese light on ebay? I sure hope you tried them anyway to say that they are inefficient) I am growing some of the best pot I have ever smoked, big buds too!! Also unless you were to do a crazy ass vertical setup with HPS, LEDs have proven to give better gram per watt ratio (with experienced growers). Not sure why you hate them so much, in the future you will have to give up your HPS, soon or later, it might not be for an LED light but something else anyway.
Some 1000watters results would be great too!! But yeah let's not start a debate LEDs VS HPS because it will get ugly!! haha
After you justify your comment, Lets just keep it to "what is your best gpw using SS''
Happy growing everyone