Most of the backgrounds present in premium pack 1 are available in premium pack 2 with better visuals and different lighting setups. The style is somewhat different.
But a few of these backgrounds in premium pack 1 are not included in premium pack 2. Those are beach scene 1 & 2; Personal room A & B; Cafe; Street A.
My recommendation would be to check out premium pack 2 instead of this one as there are even more BGs in the second pack.