My experience with Nice was somewhat hassling.
What do you like best about the product?
I liked the time allotment feature. That separated the timeframe intervals, and the fact that it could be changed from 1 hour to 2 hour or whatever interval you want to use.
What do you dislike about the product?
It was hassling to change or exchange shift intervals, and since it was being used in a Call Center setting, it was used often. It froze a lot as well.
What problems is the product solving and how is that benefiting you?
The problem NICE solves is the ease of scheduling. The idea is good, the implementation needs some work to make the software more efficient.