Posted By:
Marty OgelvieJim, you are my hero! 
Seriously, I upgrade based on presentation (looks). Since my cards are all lower graded < 5, upgrading is fairly easy but not always possible, budget wise. I will often upgrade a 2 for a nicer looking 2.
What's that old addage, I never slept with a 10 but I slept with 5 2s in one night and that should count for something!
martyOgelvie
nyyankeecards.com