I've had the Altezza's for around 3.5 years now. I haven't had any trouble with them. Here's a copy of a post from my build thread from 2012:
I finally got a small project done that has been sitting in the garage for quite a while now. My headlights and corner lights are already black, so the tail lights were the final step to complete the blackout. I installed a set of black Altezza tail lights. I know the Altezza tail lights aren't real popular on this site, but I like them. However, I did customize them slightly.
The only thing that I wasn't too wild about on the Altezza was the light colored border around the perimeter of the lights. I don't know why they didn't make that part black also. Well, I did!
Here's how they look originally, with the weird border.
I decided to tape off the border and paint it black. Taped off:
After painting:
After taking the tape off: (looks MUCH better)
And finally installed on the truck:
Now all my lights are blacked out.