At least with leds I don't have problems with rfi from ballasts repeatedly frying the radio power meter on my house (3times). Or frying the microprocessor board on appliances (twice). My peace of mind has increased greatly since i unplugged my hids. A digital ballast can turn your house into a radio beacon. You can test yours with a portable am radio if you are curious. I haven't completed a grow yet with leds (week four flowering right now) but I'm optimistic and enjoy the coolness they run at (no need for air cooling). Lower power bills are nice too, if the results turn out well.
Just pointing out there are other reasons to make the switch than just being unsuccessful with hids. It's inevitable that this tech WILL vanquish hids in time. I think we are moving out of the disappointing early adopter phase into a more mainstream era for leds. Even to a non technical person, it's clear that rapid improvements in leds are accelerating while old hid tech is stagnating. When was the last 'breakthrough' in hid lighting design/output? Water jacketed reflectors? 'Superlumens?' LOL.
I have a storeroom full of ballasts, reflectors, ducting, inline fans, etc. Possibly approaching obsolescence although my jury will be deliberating for another five weeks or so. Ultimately, the market's direction will be swung by the results of current led growers more than any other single thing. If we do well, retailers will respond by adding more led products at the expense of hid. Also, current DIYers will be taking their efforts into product development, bringing down prices on what is a basically cheap tech, much easier for noobs to use than any other lighting out there, Leds could turn out to be the desktop computer of indoor growing.
(I have had much tea this morning, forgive my babble.)