really? what if they are all from the same manufacturing plant but relabeled for sale in the US?
Jim over at DDM Tuning
http://www.ddmtuning.com/ sells a few different kits. he has never hidden the fact that they are exactly like other kits on the market, but he offers them at a cheaper price and to be honest one of the best warranties in the business. he has sent new kits before i even drop the "defect" in the mail or pulled out of a car. they have a lifetime warranty that is actually respected by many forums.
i have done a few e46 retrofits, but sometimes just dropping in a set of bulbs and a 30 minute install was what some of the customers i used to deal with needed. do you know that if bought in bulk, Jim pays $10 a kit for the basic HIDS? he is supposed to run a spring special for $17+15 shipping to put his competitors on the defense.
long story short, a member from Bimmerforums did a vid on the popular HIDS on the market and he breaks open the cases to a few of them. the $40-$60 ballast that most
ebay sellers and DDM sell are the same circuit board and components of the "high-end" $180+ kits people think are superior. even at $100 with a lifetime warranty and a hell of alot of support and testimony to his warranty, they are a great deal.
check the vid and discussion, it gets pretty good
http://forums.bimmerforums.com/forum/showthread.php?t=1119300
so, if i should never buy DD, FI, or any other brand because the JLW7 will last longer and sound better than any other brand because i paid more?