Best Level for purple candies

i tried my best but i didn’t know that it might be okay to go back to a lower level just to get purple candies. I didn’t take about it though since on mind, on contest or tournament regardless of any levels should ALWAYS go forward not going backward just to get purple candies. If it’s ok then i may try though. Thanks for your comments. E29

Level 9563 has changed and there were zero purples when I just tried it. :'( Last time I used level 1000 to play for chocolate box rewards there were close to as many as there are of the other colors (one needs over 450 of blue, green and orange).