From what I've heard, you absolutely have to have Counterbalance on Spare Change. By default it has an annoying recoil that pulls to the left, meaning the burst goes vertical and horizontal rather than just vertical with most other PRs. Counterbalance fixes that but it means you lose out on Headseeker.
Yup its recoil is just plain odd. Even with counter balance there is something about it which feels a little odd.