If your employees are in a regular schedule (i.e. 9 to 5) with no overtime then WaspTime is well suited for you. In our case, we have different shifts, overtime, weekends, and double-overtime and we feel the software limitation since we have to double-check and use alternate Excel sheets to calculate the time.
Our decision was also financial. We didn't want to pay every monthly forever, so in that aspect, WaspTime was one of the few prospects that kept it affordable.