1998 Buick Regal Purchase question

I am looking at 2 vehicles both of them in great condition.
1) 1998 Buick Regal with 51k miles for $7,000.
2) 2003 Buick Lesabre Limited with 43k miles for $10,000.

From your experience which of these cars is going to give me better value in terms of cost of repairs and quality of build and durability for someone that drives 20k miles per year? Is a 1998 too old of a vehicle to purchase at that price point?

Thank you so much.