Sad to say, but the MTW are going back.
- As others have indicated, the case will drain, drain, and drain some more. After I charged it with the buds in there, used the buds for a few hours, placed them back in the charger, it was dead and buds were at like 15% 24 hours later. I'm sure they started playing when I was sleeping. Completely unacceptable.
- The all plastic construction has started to concern me. If feels almost too light and susceptible to damage. I noticed small micro scratches on the back plastic area of the charger (not from plugging int he cable, btw) and the earbuds look like they're made of the same type of plastic. In contrast, the E8 actually look and feel more premium, while the MW07 are flat out the best in terms of materials. I may go back to the E8/MW07 combo vs. the MTW/MW07.
The sound is good but I only have 14 days and I'm already starting to see signs these may not last.