Sample is good, regular size is NOT

I got the sample at first and loved it and when I saw there was a sale for the normal sized one I jumped at chance and I’m seriously going to return it. The normal one literally only clumps your lashes together. The brushes on the two sizes are COMPLETELY different. I have short blonde eyelashes so I need a brush that’s going to spread my lashes apart and volumize it and the regular size of it does the complete opposite! Do not waste your money on buying the normal size. The sample/trial one is okay