It's really hard to determine how much of a difference this makes. To be fair, though, I have used donnyfl and found it to be rather effective. Although I've had success with them, I do wish they were lighter. geometry dash
On this, it's quite difficult to determine how much of a difference it makes. However, I must admit that after using some Donnyfl, I was impressed. I've had wonderful luck, although I wish they were lighter. cookie clicker