Just a word about Etymotic customer service. I recently sent a set trusty ER-4s (first purchased in 1998, but factory refurbished a number of times) back for a cord repair, and after inspecting the stem tips, Etymotic ended up sending me essentially a completely refurbished set, with brand new transducers, for the price of just the cord repair.
The cord also seems a bit more flexible than I remember the old one being.
The company has to offer close to the best, if not the best, customer service in the industry. On that basis alone, highly recommended.