Walkera has made a huge name for themselves in the helicopter segment so a lot of people couldn’t wait to see how their quads would play out. Early versions were pretty good and they have continued to evolve the product with versions such as the MX400.
The MX400 is one of the very few quadcopters to come standard with 3-blade propellers. The props themselves have a keyed base to prevent slipping on the motor housing but this does mean finding replacements might be a little more difficult. Most resellers have said that replacement props are on their way and should arrive within the next couple of weeks.