Seeing on here might as well ask while I'm here, my wiper blades have never been changed and think its about time to get a new set, I know this is a small item, is there a difference in one blade to another?

Ya know... it always seems that once you replace the factory ones, you have to replace the darn things every 6 months! Why is that?????

Rain X has a new blade out called "latitude" I'm thinking of giving them a try when the time comes...