Betty, I agree with Tom on this; you have your work cut out for you in making this decision.
I am a custom home designer/builder, and currently have 2 new home projects underway; one using Andersen, one using Pella. Both are very good quality windows, pricing is almost equal. Andersen offers some things Pella does not, and vice versa. From my view of the 2, I lean more towards Pella; personally I feel they make a little better product.
From one statement you made in particular, about high winds at your homesite, I would look seriously at Pella; they are the only window manufacturer who tests each component for air infiltration.