You should definitely get it, it sheers these blushes so well and evenly! When I first bought that brush I was hesitant b/c it was so small, but it's amazing. I wouldn't use anything else for cream blushes! A lot of girls here use the new 130 brush if you have that, then give that a try,too. I personally haven't tried it though.
They have the 188 brush at CCOs so you could get it cheaper there!