Don't just look at the price tag. Switching from electric to gas, or tank to tankless, can add significant labor costs for new venting or wiring.
The most affordable to buy and easiest to install. However, they lose energy through "standby heat loss" because they keep water hot 24/7. what water heater to buy
Selecting a New Water Heater | Department of Energy Don't just look at the price tag
Each type has clear tradeoffs in upfront cost and long-term savings. or tank to tankless