What are the best markets in REI that few know about?

[John Dahl]

I'm a relatively new investor, and in my market research I've found a lot of the same popular answers for good markets for OOS investors; Columbus, Indianapolis, Kansas City, Birmingham, Boise, etc. What are some of the less known markets that people are finding good ROI and cash flow? Have the popular OOS investor markets hit a tipping point now where it's hard to find a good deal?

Any and all response are greatly appreciated. Thank you!