There are lots of flight planning system options. The selection of the correct one requires some research on what your real needs are based on; number of aircraft, route structure and flight frequency.
Also be mindful that the output product i.e. the flight plan document used by the flight crew is merely a database output report from the flight planning system that is configured based on what the user wants. Using the output product as a metric to judge the actual quality and efficiency of the flight planning system is incorrect.
The selecting and configuring of flight planning systems can yield significant savings, but needs to be approached with care, Unfortunately, many carriers will devote larger amounts of time, money and effort to selecting an in-flight entertainment system than they will to a flight planning system.
Something to think about; if your flight planning system produces a flight plan that increases operating cost by $10 per flight (fuel, time, ATC costs) and you fly 500 flights a day then your annual operating cost increases by $1.825 million.