They have median household incomes of 52k and 55k respectively.

Respect that.

On here just last week, someone told everyone that all tenants hate their landlords so there was really no need to provide any level of adequate or decent levels of respect or service.

Be careful about working with PMs who don't really respect investors.

I would recommend keeping them, and gradually increasing rent on par with market increase + 1 to 2%.You could get a better qualified tenant, but they could be worse with money management, property respect, etc.

The two that I have held the longest (7 and 6 years old) if sold today would give a true IRR of 9% and 20% respectively. 

I am a believer that you have earn the trust and respect of your local vendors as well.

The guide should help you out in that respect.

I respect you and what you've accomplished.i do suffer from a rush to judgment when someone who is in the business of raising money brags about 45% returns for LPs.

They do an extremely good job at communicating in a professional and respectful manner, but not so much anything else.