Duplex vs. a 6 plex?

[Mike Leising]

Hi!  I wanted to test everyone's knowledge and get your opinion. 

Myself and 2 investment partners have been looking like crazy to find a deal.  We are basically newbies but have dove in head first the past few months and learned a ton.  We have made a handful of offers on single families and duplexes when the numbers make sense, but haven't had any go through yet.  

There are a couple 6 plexes that we might have access to before anyone else, but I have heard 6 plexes are a bit different. For example, I believe anything more than a 4 plex is considered a commercial property? What are the pros and cons of that? Does that just mean we have to put it under a LLC? Are we diving in too quickly to go after a 6 plex instead of a single family or duplex first to get our feet wet? I have so many more questions, but we figured we would start here to get everyone's opinion. Thank you for your thoughts!