We live in rural area so the proper headlight adjustment is important. We tested / adjusted beam so it is illuminating and the correct angle, not shining in folks eyes. Super frustrating and dangerous for other when folks add aftermarket lighting and fail to check beam angle.
As far as light output, the low beam setting has considerably cleaner light output than a standard halogen H4 bulb. I would estimate 3-4 times the visibility in depth on roadway (again with the beam projected down toward the roadway-properly adjusted) and adds width with some slight illumination of the shoulder / side. This was nonexistent with a standard halogen H4. High beams are ridiculously bright and throw the same clean light way way down the road. Really nice.
My son has been driving the Montero with the new 7" LEDs both morning (dark) and night and I asked him yesterday if any passing cars have flashed him. He reported that no one has flashed him since having these lights installed. Like I mentioned before, properly adjusted.
Durability I agree. A convertor that appears to be decent quality but only time wilk tell. I suspect if one or both fail, ot would only fail to convert the negative polarity to positive. Therefore only the high beams would fail. Should for some reason the convertor fail or the 7" LED light in whole, cube lights would be used. I went through all of this with my son - if for some reason you have total headlight failure, move your cube lights beam down toward the road (properly adjust beam) and we will fix at home. Honestly the quality of the 7" LEDs seems top notch and polarity convertor seems decent quality as well. Factory harness to convertor to LEDs.