Releigh and Durham markets

[Jason Malabute]

I am an apartment investor who is looking to expand my investing market. Releigh and Durham is 2 of the 4 markets who have made it to my final round of research before i make my decision on which market to focus on. I was planning to focus only on one market but realized Releigh and Durham are only 30 mins away. Do most investors that invest in one market consider both markets when investing? Or is Releigh and Durham 2 different markets and new investors should only focus on one at a time?