I'm trying to slim down my carry-ons in order to meet BA's draconian standards during a trip to Copenhagen at the end of next month.

One candidate for the "diet" is my Bose QCIs. Based on searching the previous FT threads on this topic, I've narrowed down my choices to the Shure E3C or the Shure E5C earbuds. (In either case, I'll likely have custom-fitted sleeves made for them.)

There's a big difference in price. (On eBay, approximately $140 vs. $379.) So, my question is: If you're not an hard-core audiophile, and your criteria include blocking out as much noise as possible with comfort, is the E5C really going to be worth the premium?

Thanks for any and all input!