They are a significant improvement. Once used they become one of those things that you almost won't do without.
If you've not had it out at night yet don't be surprised if it becomes necessary to do one more thing. The line of illumination on each of the HID kits I've installed was noticably lower. Had to adjust the headlight up a lot to being it where you want it. On those dual element housing have had to take the spring out of the top adjuster and grind it down to shorten it enough to gain necessary travel.
Well, we're getting some weather down here......again. Unfortunately, it is forecasted for the weekend as well, but that really is just a guess. Just like the old saying, "you want the weather to change in Alabama, just wait a minute or three.
Anywho.......first dry night, I'll get out and see how they look and adjust from there. We're a pretty good ways out in the bean and cotton fields, so should be able to tell right quick what adjustments will be needed. Thanks for the spring tip. Don't have a bench grinder..yet..so will have to use a die grinder if necessary.