So I stopped by my fav. hydro store today and got a closer look at the
Gavita double ended HPS setup. Price is steep, about $575 or so, but you do get bulb, reflector and magnetic (but sadly not remote) ballast for that money. They're also tops in the lumens per watt race.
As far as I could tell,
Gavita's bulbs are proprietary and they run $169.00 each. Here's the kicker though; the lumen depreciation over the first year is just under 10%. Whoa... that means this bulb will not only outperform all single ended HPS bulbs currently on the market, but it outlasts them by twice. Right there, this rig saves you sizeable coin on replacements, and I'm a big fan of less maintenance and parts replacement.
I've used
Hortilux bulbs before and they were fine. I have no experience with their ballast- and I'm waiting for people's reviews here and elsewhere to tell me how they like them.
On the other hand, if another manufacturer has proven technology that's clearly better for the same price point, it's going to be hard to justify sticking with Horti just for their name. And
Gavita is highly respected in the industry in their own right...