I don't really have a need for an L2 charger at home, because I have one at work.
But from everything I've read here, stay away from the Voltec unit. They have a high failure rate soon after the warranty expires. The Clipper Creek seems to be the crowd favorite for the most part. It's relatively compact and can be portable, and I believe a 2 or 3 year warranty. It is also the best value.
I haven't seen much about the Leviton units, but they are a reputable company, and it should be a reliable product.
Love My Volt!
Blue Topaz, Black/Ceramic White Leather, Nav 2012