DDM makes the exact same plug and play kits as everyone else and their momma is selling, except they supposedly have their own manufacturing warehouses and are able to sell at a cheaper price and offer LIFETIME WARRANTY. I have purchased like 6 kits, including slim ballasts and hi/low kits from them for all different vehicles with absolutely no problems so far out of any of them. I was suggested to their website from some guys on MRS and TO and all of them have said they've never had any problems with them either. I figured whats it matter, its cheaper even if they dont stand by their warranty later down the road, cause Im still going to buy them online anyways. I'd recommend them.