How funny! I just ordered the purple ones myself tonight as they deliver to the continent!!!
Soo, I love the purple and I really think once you have them, you will be surprised at how much wear you will get out of them. However, those silver ones are pretty nice too... another vote for both! But I think you will get alot of use out of both...for different reasons. I think th purple is a bit more high end, I think the silver is chunkier and funky, depends on your normal style, jeans or glam?
Like I said, I could rationalize/justify both!!