Welcome to the forums! Here is some more info that ill transfer over to this post as it seems that a lot of people look at both.
The lights are DEPO Headlights. They are directly plug-n-play with existing E82/87 Halogen setups. I am unsure though if the E82 lights are the same as your E87? But you can find them here from a vendor on the site -
http://www.**********s.com/Depo-Headlights-E82.htm
Below is what a recent member did to his DEPOs. He added the HIDs and LEDs to the DEPOs to enhance the look. The stock DEPO lights are marginal to say the least i.e. - low light output and dull.