Their biggest problem may be the size of their user/usage community, it may not be so "Everything is rock-solid and just works" for you and you should probably expect that some features may not be so tested or used outside of the developer using the code for their own purpose. On the plus side, it allows them to fast move forward and break backward compatibility for the greater good, however keep in mind to follow their mailing list and read the change log very carefully to avoid surprises.