I have the same mirrors, in regular length, with the LED blinkers and a different finish..
They feel somewhat cheap: wires are the thickness of a strand of hair, the plastic is kind of flimsy, and the glass isn't quality..
However, they look slicker than shit in a rainstorm, the price was unbeatable (I think I paid ~$45 on ebay), and the visibility is WAY better than stock. The glass is slightly convex and they extend laterally a bit further I believe..
I'd say it's one of the best aftermarket pieces I've added overall. I get more compliments on the mirrors than any other part