I understand the BRRRR strategy is very popular, but lets not forget the traditional rental type. 

Was wondering which cities and towns are some of the better choices?

Or don't learn your lessons, and continue to lose deals because you think that the world owes you a favor, the choice is yours. 

Contrary to popular belief, this is not set because I believe it will give me a higher return.

In no particular order I have listed some of the most popular markets for out of state investorsCincinnati, OhioDayton, OhioToledo, OhioYoungstown, OhioCincinnati, OhioMemphis, TennesseeSaint Louis, MissouriIndianapolis, IndianaDetroit, MichiganErie, PennsylvaniaLouisville, KentuckyMilwaukee, WisconsinJackson, MississippiEach of these markets is popular with turnkey investors because of the low barrier to entry, high rental demand & high rent to price ratio.

I don't think there is a person here that can truly answer this question for you for the simple fact that it is a personal choice.

Don't try to get crazy with design or go against what's popular.

I started with a duplex, but in hindsight the 4 units would have been a better choice.

Multifamily properties are extremely popular right now, so finding a 4plex will be difficult (at least in Knox & Chat).

There are choices available.