I have been using these for over a month now and really like them.  No breakage and they feel real solid.  The only thing that I would like to do or see them sell is a d-ring that can be permanently installed on a door frame.  It gets really old doing one exercise and then having to open up the door slide the ring up the jam and then close the door again and then repeat for the next one.  I would like to just have 3 d-rings where you can clip to for a quick change.  Outside of that, the handles are soft and seem strong enough to last at least a year of constant use.  The bands also look like they will hold up and not break.  I have purchased other types that snapped within the year.  These look much better made than those.