Originally Posted by
ddallas

Meanwhile there's an older gentleman on another forum typing, "my fancy pants kid blows his MR points on J or F seats. I tried to explain to him that he could take twice as many trips if he used his MR points for coach tickets. After a while I realized it was pointless to keep trying to convince him and he is a kid that just doesn't want to get with the program so I gave up.
that depends on the program. If we would be talking about M&M miles for example, an intl. coach ticket might only cost you half of the miles a Y/F ticket will cost you, but you are also going to pay ~550 Euros in YQ charges for which you probably would have been able to buy a normal discounted ticket!
So in most cases Id have to agree that C/F redemptions are the best way to go.