I use PPS for our coorperate operation (1 Jet) It is not bad, however has its drawbacks. It is still not fully windows (as promised already years ago).
Another system, that gives you way more than just flight planning, is aviationoffice, made by a german F/O. I use it for all my scheduling and license and maintenance oversight.
You can sent Handling request, airport slot request etc direct out of AO. It is fully windows and uses as well LIDO data. I will change to AO for flight planning as soon as our PPS contract expires.
The PPS crewbriefing feature is probably the best you can get in terms of met data preparation. You upload you plans to crewbriefing and the crew can access it through the internet and you get tailored wx charts and notams etc for every flight.One can upload documents (pdfs) either for selected flights or all flights. A very good tool.
AO offers something alike, but less powerful.