For those who like'em they are at the very top!
Speaking of myself:
- Putter pal: comes in handy when my paper pal, glued to the screen frame, is not available. That is with any serious game off my computer desk, from another computer or while travelling with my notebook.
- Speed up boost: Only used it once in seriousness, when I feared to finish a tournament late without it. Some also say that opponents in a match can be irritated especially on putts.
You didn't ask, but
- shot pal: Useful in throttled approach shots, but the other (estimated) half is full shots where the pal is wasted.
- XP boost: I consider this a waste, because it costs a lot of credits with limited use in return. Why not wait a few days more, using the CDP bonus?