LLC vs S-Corp. What are the differences?

[Gerald Marshall]

I've been a landlord for about 5 years now and use the proceeds as income like most do in the beginning of their REI careers. The question is, whether to initiate a S-Corp or LLC for my passive income. My CPA recommends an S-Corp. Her reasoning is that a "S-Corp is where you want to be in the future, so start there". But, I hear and see so many who deal with Passive Income using just the LLC. What are the drawbacks from becoming a S-Corp. What are the benefits? Anyone else have this dilemma?