I have never chinned before, but in a guide it tells you to use short fuse, and someone commented on that as well: "Just a note that using Short Fuse, you can use a maximum of 1,500 Red Chinchompas per hour if you are constantly attacking. If you use Medium Fuse, then you could use up to 2,000 Red Chinchompas per hour, although I agree with you that Medium Fuse is not the best choice as it hits more 0's." So yes, medium fuse is faster but less accurate according to that.