These are the Halos I bought and Im very very happy with them. They look awesome and are wayyy bright. Pic really doesnt do them justice.
The install took about half a day, mostly because I wasnt sure what it was going to inhale. The install of the larger rings was pretty easy, however in order to get the smaller rings to look the way I wanted I spent some time dremeling the inside of the light. But Im really happy with the finished product. I hooked them up toggle style because I wanted the option to run them when ever I wanted and or when my headlights are on or off.
Keep in mind opening up your lights means putting them in the oven for about 3 minutes in order to make the glue pliable enough to separate the lens from the body.
Overall its a really easy process, just take your time and do it right.