In the above mentioned thread, Logitech also says that they would not accept returns, since, as they say, it's the same product.
I am not sure what to think about the whole affair, to be honest. I do appreciate that Logitech realized that they had quality issues in the beginning, and that they continuously improve the product based on experience and feedback (a number of small changes implemented).
I 'violently' agree with them - that's exactly what every company should be doing! In fact - that's exactly what we expect a company to do! Wouldn't it be horrible if they just continued building a faulty product?
And mind you, many companies do that - be it car, mobile phone or DSLR manufacturers. Mercedes, Canon, Apple.
Everyone who's bought a product and is upset that it has been updated - get used to it. that's today's fast evolving world.
At the same time, once I realized that Logitech has indeed improved the product and that this manifests itself in, apparently, a new shell etc., I obviously did not want to receive the 'unimproved' version any more. That's why I cancelled my order before it was shipped.
The fact that they advertises an improved product and sell stock of faulty product is what rightfully causes the uproar.
My conclusion is that they did a great job in improving a product, and that they did a horrible job of rolling out the improved versions, by combining it with a) a new name and b) a new packaging.
It sucks, since I am still without proper IEM's, waiting to get my money back from LogiTech.