Are 30 year shingles much better than 25 year shingles?

I am having my roof redone. The contractor is an older guy who has
done a lot of work for my mother. He is charging me a very good price
to do my roof. He does good work. I would like him to do more work
for me in the furture.

Basically he was supposed to put on 30 year shingles and started
putting on 25 year shingles instead. It was probably a delivery
mistake. The style is slightly different (old style) than the 30 year
(newer texture style). I like the newer style better but don't really
care. They are the same color.

Where I live (northern NY) we are happy to get 20 years out of a roof.
I don't want to break the guy's balls if there isn't much difference
in the shingles. I was wondering if I should even mention it to him.
Any thoughts?

Thanks