If you assume the car will vaporize into a cloud of dust at 200,000 miles (unlikely but a good conservative estimate for any decent car), you get a depreciation of $14,500 / (200,000 - 34,000) and $13,000 / (200,000 - 44,000) . This works out to 8.7cents/mile and 8.3cents/mile for depreciation. 6.7cents/mile and 6.3cents/mile if you call it a 250,000 mile car. Either way, the 44,000 mile one is a slightly lower total cost of ownership, but there's enough random chance of mechanical failure or premature wear over 200,000 miles that those numbers might as well be the same. Get the one that's the color your wife likes the most.
It's pretty amazing that a car that new can have such low depreciation numbers. Both sound like pretty good finds.