douglas rims

the thickness of the aluminum to make the rim. red labels are .190 thick and I believe the blue ones are .160 thick.
 
yeah it says however that the .160 are sufficient for normal riding conditions(non racing i guess).I figured though if I was going to spend extra on alum. rims what is an extra $20?
 
i was just wondering what the diffrence was i have red labels on the bike now. but the bike im picking up today has some blue labels on it.. just wondering what was better and why.. thanks guys..