I'll give you a bit more than you asked for...
Currently invested in two markets:
1) Jax 2) Indy. Both offer low price points, strong cash flow, good growth metrics, fairly easy to travel to.
Have researched and made offers, but nothing purchased yet:
3) Atlanta - mature market but still really strong growth potential, personal familiarity, decent price points and decent cash flow.
4) Chicago - possible future retirement location. In the right neighborhood, potential major appreciation longterm.
Researching with great interest but not quite ready to pull the trigger:
5) Tampa - Just sold a multi so no longer have any property in this market. But if we decide to diversify within FL this would probably be the area. Have some familiarity.
6) Philadelphia - Like Chicago, possible future retirement location and potential major appreciation longterm.
7) Louisville - I think this metro has a shot at being a Denver/Austin/Portland. A city that 15 years from now we look back on and marvel at its explosion in hipster popularity and lament the insane real estate prices :)
8) NWI - Offers proximity to Chicago along with the low price points and strong cash flow (and pro-landlord laws) that are found in Jax and Indy.