Ben,
if you fill out your location in your information we can give you some better advice.
If you're in warm areas, ie QLD I would not even consider the full 1 piece plastic frames as there are way too many crevices for SHB to hide in.
Plastic foundation I have used but don't like. The bees don't seem to like is as much either. In my hives they draw it MUCH slower, and make much more brace comb on it. If you want to cut out a queen cell etc it's much harder with plastic foundation. The bees can't modify it at all, eg sometimes they make holes to travel between frames on wax foundation frames.
I have tried to get rid of all of my plastic foundation and have gone for foundationless frames. I have not thrown the plastic foundation out though as one day I may use them in an emergency, or for a swarm trap or something.
ML