I jump in here because I used to live and was a REALTOR in NJ... Even if the costs are now comparable between electric and HWB heating; do not forget to factor in the livability issue. Most people prefer HWB to electric because is is less drying, more radiant, and much more comfortable all around. When I was looking at homes in NJ, I pretty much eliminated those with electric heat (unless they were a good deal and I could convert the heating system). So, with a comparable home in your area, and the only difference being gas/oil HWB vs electric heat, the home with HWB will likely have an advantage on the market. Best of luck!