Any recommendations for good areas in the country to get started in? 

It depends on the state, the actions of the borrower, the “bias” of the particular court should the borrower file an “action” (bankruptcy, wrongful foreclosure, temporary restraining order, non enforceability of mortgage or deed of trust, etc.).

Now this depends on where you are in the country and where you are investing, of course.

I believe every court system has a method of withholding rent when landlords are not fulfilling their obligations.

While okc is not the ideal spot in the country for many things our laws are and have been very landlord "friendly"  I can't imagine something like this going down in my lifetime here. 

Country property all brick duplexes. 

I am looking for a tax specialist in or around Delaware country or Philadelphia.

I'd prefer not to take things to court/sue.

I understand Newark CAN be a hassle for newer small investors, due to renter friendly courts and low potential low quality tenants.

OK, I'm not a lawyer, so this is just for discussion purposes based on what I know and have experienced in the New Jersey courts: 1.