GP Thunder VS LED
 

I wanted to show a comparison of the GP thunder and the LED i bought for the x5. If you are thinking of changing from stock, hope this helps.

what do guys think, which one would you stay w/? left, LED. right, GP

I change my mind depending on the pic. lol. The top one I like the outer ring. The bottom pic I like the inner. The top one looks like the ring isn't a solid ring. Look broken up. Just from the camera?

Gp looks real bad compared to true led.

LED looks much sophisticated while GP light is all over the place.

Really hard to tell from those pics but I imagine that most would say that the preference is Factory LED > Aftermarket LED > GP Thunder

This isn't even a comparison and shame on you for buying both. Even more shame if you didn't buy LUX.

That is not LUX. Looks like some generic LED. Both are performing to what you would expect from their pricing.

The color of the LED is a bit better, but in bright light I am betting it washes out quite a lot. If these are $100 LED's, they are not worth the 90 bucks extra over the GP Thunders.
If you want good LED's, LUX is the way to go, but a bit more money!

^ sums it up nicely.

Talking from experience also, ran the $100 LED butterfly style, stunk in bright light and lasted about 4 months, switched to $15 GP Thunders and found them better in daylight, 8500K come pretty close to the LED color vs the 7500k - was happier with them if they where the same price, but save the money and run the GP Thunders. Recently went to the LUX V3's and they are the best thing I have tried, no dimming when the lights are on, very white and bright and light the outer ring better than anything I have found to date short of replacing the rings fully with LED's.