I've looked at duplexes and tri-plexes but have not acquired one. I have single family units - townhomes and condos. Multi-family is definitely a good bang for your buck. I'm going to look at a duplex out of state next weekend as my area does not have much of an inventory and most of it is in areas I do not want to own.
RE: ScaredyCatGuide to Real Estate: Make Your Money Work For You Using Real Estate