100 series is Andersen's Builders grade / entry product line. Multi-million dollar home I would go with the A series if sticking with Andersen, if those were the only choices.

Any anderson window series is available to my contractor

"something that I won’t need to replace again."

That is mainly determined by the house's location and your age. The older you are the easier it will be able to achieve.

Read between lines: "If those were the only choices."

Anderson is not normally used for anything high-end in my state.

I don't know about Anderson 100 level, but I will throw out these thoughts:

- Having walked with my dog /specifically observed windows in a wide variety of houses, I am 100% sure that window quality is one of the things that most makes a house look "nice" or "high end". Cheap windows stand out like a sore thumb.

- I love my mother's tilt-in windows. So easy to clean.

- Good windows will last. Mine are original to my house, which was built in 1970, and they don't need replacing. I have one cracked window (in the bay window in my bedroom), but the rest are still excellent.