Buy (1) multi-unit for cash, or 2-3 with a mortgage?

[Mike Malone]

My partner and I have 200k cash on hand to buy a multi-unit. We've bought and sold 3 single family homes and 1 two flat over the last 5 years but would like to be more aggressive with our next move. 

Located in the Midwest - our basic question is, should we buy a 4-unit building for 200K cash, or should we focus on mortgages for 2 or more similar properties and pay all the interest on the loans?

We are looking to hold for 5 years and then reassess. Rent is roughly $600 per door.