Rentals include the price of the property tax, so you are paying it anyway. When I rented, the property taxes went up, and the landlord increased my rent to cover it. No landlord is going to give away the cost of the property tax, they will include it in the rent.
I've gone through this exercise on FreeRepublic before. Check out the real estate listings in your town and find a home that you might consider buying. Sit down and figure out your monthly cost of owning the home. Then contact a realtor and see if there are any listings for rentals in the same neighborhood. Sit down and figure out the monthly cost of renting the same home. You'd be shocked at the difference between the two numbers.