I think I got stupid-lucky with the Sugru repairing my last set of ER6i's. They work fine now and don't cut out when I wiggle the cord as they did before. I just wadded some of the Sugru up around the existing crack in the strain relief and let it setup. I used a chunk about the size of two peas and it encapsulated the old strain relief fully. This stuff is fanstastic. I may not have needed to buy a new set, but I had serious doubts as to whether I could save the old pair. So - I've got a spare set now. I have way too many sets of earbuds. I took a business trip to Berlin this week and forgot to bring any headphones at all. I ended up buying a relatively cheap set at the Brookstone store in the airport. They will be my backup, backup set.