Why not the heavy round instead ? Better speed, larger, same resistance.
Ehmn.... not true did a test with phase on the duel server.
Heavy round shield vs Plate covered round shield.
Heavy round shield could take 8/9 hits from hes Danish while the plate covered round shield could take 18/19 hits
That was unloomed imagine how much the extra 53 hp does to the plate covered round shield in terms of hits once you +3 it.
Just saying....

But if you have a good amount of shield skill then i would pick the heavy round shield.