Realty Income is the industry giant and Agree Realty is a budding upstart. Which one you'll want to own depends on your investment goals.You likely wouldn't be making a mistake if you invested in Realty Income (O 1.24%). Nor would it be an error to buy Agree Realty (ADC 1.22%). But while they are very similar in some ways, they are notably different in others. Here's why you might want to select one of these high-yield stocks over the other.Realty Income is the name to beat in net leaseRealty Income is the ...