I bought a slab at Soulmans in Terrell Monday. It was a small slab, St. Louis trim, was probably about a 3.5 lber before they trimmed and smoked it. But the flavor! It was cooked perfect. Over Hickory.
Eddie Deen has a place in Terrell again. It's called "Hickory Roots". Same building he was in before, next to Pop's Fried Chicken. Haven't tried his ribs yet but his brisket was real good.
Can't help you with the beef ribs. Pecan Lodge is supposed to have a massive rib. It gets great reviews. I've been there once but they had already sold out. They're in Deep Ellum near Downtown Dallas if you want to deal with all that.
And I'm right there with you on the Hammond's Ribs in Glen Rose.