If you are looking at upgrading the E60 halos I highly recommend doing LED halo rings. The factory halo system is garbage at best. Opening up the housings it install the rings isn't easy but worth it as you can fix the damaged wires and clean the inside.

I went with Orion V4 LED halo rings. I prefer not to mention the company as their customer service is awful. I ordered opaque and the company didn't send them. They told me they use "frosted glass" spray paint...so I had that done as I didn't have the time to wait as the housings were all apart already. I will eventually upgrade my LM1 to LM2 so I can code the halos as DRL and welcome lights.