All round better carver. Frosts are great in so far as being a cheap introduction to carving, but in my experience they don't arrive in a particularly sharp condition (However, this means they're good for learning how to sharpen spoon knives, and the steel does sharpen well).
What I'll say about the Del Stubbs is that:
-Mine arrived in a very sharp condition, so I was up to my knees in shavings about ten minutes after opening it.
-It's got a better shape for getting through wood, and the rounded back is useful if you use your left hand to push the blade whilst holding the handle in your right.
-The handle is comfier and prettier (mine is birdeye maple).
As you say you're looking for something basic I'd say go with the Frosts and enjoy the learning experience, but if you have the money and know you're going to be doing a lot of carving then I recommend Del's knives.
Mike