Figure out what the best use of your time is, and concentrate on that.

We still own a couple properties in IL but our portfolio is mostly concentrated in southern states. 

I concentrate in C grade neighborhoods in Pasco County.

If you're in a heavily concentrated family area, then I would shy away from it.

Now I have something to concentrate on, you'll find it easier to concentrate on one thing if you take action.Tyler

Look everywhere, find what fits your niche and concentrate on those.

Also you want to really concentrate on building a great team, contractor, agent, lender etc. make sure they complement you and your strengths.Let me know any other questions you may have,

They are too concentrated on closing and earning their commission.

.* Condo is not FHA approved* Condo has a high concentration of investors, i.e. non-warrantable condo* Condo association might not be putting aside the required 10% to reserves* Condo association might be defunctThis is not an exhaustive list.

I will typically use NPV when trying to decide between multiple investment opportunities; I will use IRR when trying to determine if a particular investment will surpass a hurdle (a discount rate).Multi-family syndicators have concentrated on IRR for some reason, and because it's the most common way to measure returns on these deals, all syndicators have to focus on this number in order to provide investors an apples-to-apples comparison of the investments.That said, IRR isn't always apples-to-apples -- like @Thomas Greer said above, IRR make the assumption that cash flow will be reinvested at the same IRR, which is rarely accomplished.