In my opinion, the main thing that would point to a problem is the wear pattern of the tires. Since you stated that all 4 tires wore evenly, then the car is obviously aligned correctly. If the tires were cupped or feathered on the inside or outsides edges, then you would definately have alignment problems.
The 205/60-15 tires are more a performance oriented tire size so I don't think that we are going to get 80,000 miles out of a new set of tires.
I have the same size on my 95 Contour SE and recently purchased 4 used BF Goodrich Touring T/A tires for $127.00 mounted and balanced. I was going to buy new Michelin XGT
tires from Sam's Club, but decided against it after reading reviews about the tire on TireRack. It didn't make sense to me to spend over $430.00 on four tires that would only last 25,000 miles at the most.
Michelin makes a Radial X tire in our size that has an 80,000 warranty, but I didn't want to spend $500.00 for them.
It's hard to find a new tire for our car that has a Tire Wear Rating over 600 and is reasonable to buy.