Yes it would leave me fully charged during the week, I set the charge value so that it does not come on till low time for me. The level two really comes on handy on the weekends running around and topping the car in-between the kids naps. I have the 50amp plug in my garage, so I might as well...
I bought a portable one but leave it mounted to the wall (the 40 amp juice box) and take the 120 with me for an emergencies. I only drive 50 miles a day and get home with 45-50% battery every day. The juice box changes it focus in a couple hours where the OEM one takes all day, about 5-8% an hour.
I bought a second hand lease turn in from a dealer in Scottsdale and am happy. I did add a level 2 charger because the 120v takes forever. I say go for it, mine had 20k miles on it when I got it, the only thing that I have had to do is change the 12v battery, then I added floor mats and tint...