What cap rate do you all look for when investing in a duplex or multi-plex property?

[Sam P.]

I am considering investing in a duplex in Colorado Springs, CO and/or Austin, Texas.  Colorado Springs property tax seems ridiculously low compared to Austin and its surrounding areas.  I was even looking at 4 unit multiplex in Oakland, CA since I'm from the Bay Area so I can easily manage it myself but that place is such a mess.  What cap rate do you all look for when looking at duplex's or multi-plex's?  If you all have a CORE 4 to recommend in these areas please let me kThanks in advance