I would go with the zero turn mower.

Used a regular for years and my back would really hurt and it took a long time because it was ruff.

Now with my Kubota mower it takes me about 35 minutes to mow the same places.

They cost more but the ones with a welded deck will last a long time.

No matter what brand you get make sure there is a good dealer that you can turn to if you have problems or need parts.