I lived in the area for 3-4 years and decided to invest as they have a high concentration of intelligent people in the area.  

It has a fairly robust economy, with the exception of high tech and medical jobs, with a large shift in the last decade to being a logistics hub for So Cal due to it's central location (the major HWY arteries to the rest of the county run right through the IE) and has some of the largest concentrations of large warehouses rivaled only by New Jersey, the median income is a little below the Cal average by about $10K and about $5K higher than the national average, but, it has been growing.

And, since most people hold a property for many years, so you will need a number of reliable tenants over the years.The best way to always have a reliable tenant, is to target a tenant segment with a high concentration of reliable tenants.

The kicker in WPB is that you have Palm Beach Island - a concentration of wealth from all over the world that is unlike anywhere else.

The best way to always have a reliable tenant is to buy a property that matches the housing requirements of a tenant statement with a high concentration of reliable tenants.

Also, because you will likely hold the property for many years, you will need multiple reliable tenants over time.Start by identifying a segment with a high concentration of reliable tenants through property manager interviews.

You can and many do but the best IMO focus their concentration and work life.

You can implement both strategies (concentrated portfolio and maybe trade a little more frequently versus passive buy and hold).

Class C neighborhoods, on the other hand, tend to have a higher concentration of rental properties, lower median income, and a higher crime rate compared to Class B neighborhoods.As a new investor, it can be overwhelming to decide between Class B and Class C neighborhoods, especially if you have conflicting advice from your conservative side and your financial brain.

In Houston we have the #1 market for job creation in the US, Low inventory and one of the highest concentrations of migration out of most US cities.