@Lenny Kancharla Well I generally shop around in the metro area because they tend to be more stable markets. Also have a larger supply of multifamily. The problem there is depending on what type of cap rate you look for it becomes difficult to get a decent cap rate without going into pretty crappy areas.
So I look for complexes that I can add value and make them run more efficient on the management side.
But since these days a lot of big firms have been buying a lot of the inventory, it's not a bad idea to look outside of the metro area to find a decent property to purchase.
The best time to buy apartment buildings were 3-4 years before the crash. As all the tenants moved out and bought homes.
I agree with @Joel Owens I started looking at under 20 doors and found that too many owners ran these properties and didn't keep good records or pay themselves. This wouldn't work for me since I hire third party management.