Is it better to list real estate as LLC or S-Corp

[Moe Juran]

So I have an S-Corp which is idle and recently bought a double which I close on soon. I don't have a mortgage and I still don't know whether I am going to rent it out or flip it. My question is, is it better to file it under an S-Corp or an LLC, what are the major differences, does it matter if I rent it out or flip it? Mind you I already have an S-Corp files with the state so I wouldn't have to form one but if LLC is better I would have to file a new one.

P.S. I’m in NY state