Tested and tried, this brush set is soooo good.  Beautiful thick handles with a great grip, and therefore great control.  Smooth distribution of paint and just so lovely to use.  They look very pretty too!  Small detailed brush right through to the large brush for paintings with large background areas.  
 
You won't be disappointed in get your very own professional brush set to help you, not only with your paint by numbers, but any other painting you do in your life!
 
Enjoy!