I am unimpressed with http://sek.us.com/index.php?option=c...d=50&Itemid=60
. I did a retrofit project that had Kerr in the driveway last winter. Broken caps from the weight of vehicles and moisture intursion issues resulted in corroded sockets. Therefore, it is not a quality product that I would install.
In my opinion, I'm not comfortable with installing fixtures in a driveway. Vehicle traffic, snowplows, pressure washers, and oils make a driveway a difficult place to install trustworthy fixtures.