Originally Posted by
azeckel
It totally depends on your travel pattern whether or not it will make a huge difference in your upgrade %. .
+1 this...
If your regular flying is on medallion-heavy routes, the difference between GM and PM can be huge for upgrade percentage. However, if you've done well with upgrades as a GM, it may not be worth the effort, i.e. buying MQMs or making a MR, to qualify!