Can folks fill me in on the quality and effectiveness of LED headlight replacements for OEM halogen bulbs? They are all over the cost spectrum.

Specifically, I am looking for plug and play (no modifications, no transformers, no rewiring, etc.) highs and lows. I am concerned with the projected patterns remaining the same, just brighter. (BTW, not interested in stuff from Retrofit Source - I removed their junk from my car because of terrible fit and lousy support).

Oh, my car is a 2002 E39 Touring with OEM halogens.