[turbo6bar]

This is a hot topic on mrlandlord.com forum. I am in the sole proprietorship camp. Get a huge umbrella policy to ride atop the liability insurance on each property. You'll come out cheaper for the same protection. If you get sued AND lose AND the award exceeds your umbrella policy limit, well, you done fuched up and perhaps you deserve to pay.

That said, the LLC does hide your assets a bit better, and may reduce the chance of being sued.

I presume you're a first-time landlord, so I strongly recommend you study the other aspects of landlording. As suggested by merc126, finding good, creditworthy tenants that pay on time and take care of the place is job #1.