@Brendon Kerrigan This is something I continue to grapple with myself as a new investor. I currently own one property that I am House hacking in West Atlanta. This has been something of rapidly gentrifying area which has allowed me to capture 100k in equity in less than a year (likely aided by the fact that I bought below market) That being said what started as property that did a little better than break even is now Cash flowing $500 a month after all expenses.
To answer your question, I feel that Urban properties have a more consistent rental demand due to the higher cost to purchase and the desirability of being close to the city. However, I would not recommend buying something that didn't at least have some cashflow on the table. I think a good strategy is to diversify with a combination of Suburban Cashflow properties with a few city properties that have high potential for appreciation, equity and rent increase.