Which mower should I keep?

I have two push mowers and need to get rid of one (don't have a use for more that one). Both are in about the same condition as far as the deck, handle, wheels. Both have very little use and the same amount of use (2 seasons). So, it really boils down to the engine. Both have Briggs engines. I've done a lot of searching but can't determine which engine might be more durable.

Mower 1: 1996 Murray 22" with the 4.5 HP Quantum XTE engine, model number: 127802

Mower 2: 2008 MTD 21" with 158 cc 5.5 ft lbs torque, model number: 10T802

Which do you think has the better engine? Parts cost one vs the other?

Thanks for any help!

Which mower should I keep?