There exists only a handful of popular Level 2 residential chargers and we're often asked which one is the best.
It depends on what you want/need really.
As EV West tells us in this video (yes, EV West sells chargers, so you'll have to ignore the salesman aspect of the video and instead focus on the informative stuff), the best chargers out there in terms of bang for your buck is probably the Clipper Creek HCS-40, but there are other solid options depending on your needs.
As the video description states:
"Here is a quick overview of some of the most popular EV Charging Station options for the start of 2014. This quick video will help you choose the right charging station for you and your vehicle's needs. Models include the Bosch EL-51253, Clipper Creek LCS-25, Siemens VersiCharge VC30BLK, and Clipper Creek HCS-40. Hosted by Michael Bream of EV West."