We use 110 to charge our PHEV (which admittedly has a very small battery). I would like to get a PHEV for our next vehicle, but the price premium makes it very unattractive for us. Some vehicles are $12k more for PHEV, and given how little we drive it would never be worth it. It's nice not tanking up often, but the extra cost (and extra car insurance) isn't worth it for us.