Hi, Christine, I invest in Allentown myself as an OOS investor. All of the market above sounds promising, but rather than finding the prefect market, I would encourage you to network with investors in above market as much as possible. I see investors making money in every market, and I see people losing money in even most promising market. After talking to many OOS investors, I do not think market is a deciding factor for success or not. If you can find a team you can trust in a market, that is the place to go.
Major issue in Lehigh Valley now is the low inventory, if there is something good on MLS, it will probably go under contract with in few days, with a cash offer, really hot market from LTR perspective. Please feel free to reach out if there is anything I can help. My realtor is @David Ribardo, before you making a decision on market, feel free to reach out to him, as an investor in the area himself, he can provide you all the pros and cons in the area. No rush making a decision on market, take the time to network, check the on market deals, no purchase until you feel really comfortable with your locale team.