I installed these lights on my semi trucks, a peterbilt and 2 kenworths.
The difference is noticeable.
Very easy to install, even give you white gloves, haha. As long as you remove factory clips properly the new lights will install like factory ones.
The beam is good, they seem to spread the light wider a bit then factory, but no one has bright flashed is for 3 weeks. The distance is also very good. The blue led light does light up the roadway, shoulders and ditches more so overall 5 starts.
On the peterbilt I had to order the M3S because the dust cover wouldn't close securely. Kenworth didn't need too, but I did anyways Cuz I found it would be easier to have all 3 the same.
I'll need to adjust the beam on peterbilt a bit as there is a slight gap but it's not the lights fault.
Overall 5 stars for price and ease of install, just plug and go and no glitches or warning lights on dash saying light fault.