Who Offers The HID Slim Ballast On The Market???

With So many options on the market today, how do we know who carries the HID Slim Ballast out there? What factors should we consider when determining the best company to purchase an HID kit from in the first place? Hopefully, we can clear the fog of war between HID Manufacturers, Trading Companies, Agents, Dealers, and whoever else is poluting the internet with bad information.