Ornate shield is now 100k at Antica so it's super cheap. Justy use it since you get cash for it and 130lvl.
Ornate Shield - 130lvl required, better % for physical
Pristatic shield - 150lvl required, less % for physical
So it's better to use ornate especialy if youre going for TH with full chest of mobs. The only adventage of prisnatic shield is price.