I'm sad that the 750 Wireless already sold out. I was hoping that someone would have already come out with a review of the product. I have the T20I's and I really like them. The only problem I had with them is that some little thing would break whether that would be a connection or a small rip in the rubber cable that would turn deadly. If it wasn't for the amazing customer service I would stick with cheap headphones. I have a couple of questions: 1. It would be ignorant to say that I wouldn't lose any sound quality by switching from the t20's to the 750's, but what kind of sound quality reduction can I expect? I know it might not matter all that much if you're working out, but it does make a difference in your workout if you can be immersed in the sound of your workout playlist. I used to work out with my T20's but they aren't really designed for that kind of stress and that's totally understandable. 2. Will you ever make T20's wireless? that would be great. 3. When will they come back in stock so I can buy them!? I'm subscribed to a notification when it's available, but would it be nice to know if it would be 1 month or 3 months when I could purchase them next.