I recently had a new oil boiler with tankless coil installed in my home. Unfortunately, the hot water production is not adequate for our needs, so we'll need to get some type of hot water heater.

From what I understand, our options are an electric hot water (no gas in area),indirect hot water heater, and a booster(?).

What is the difference between these options? Is any one better than the others for my set-up? Experiences with any of them?