New Construction Duplex Size?

[Franky Martinez]

I have a piece of land in a great area that I want to put a couple of duplexes on. The lot is big enough to accommodate any size building, but my question is, would you build a 2 bedroom 1 bath , 3 br 1 bath, or 3 br 2 bath? 

I have heard conflicting things and good reasons as to why do one over the other and would like to hear what some of the experienced people have to say.