I’ve been using SImbrief for years and love it but have a slight issue with Flight Plans for the new PMDG 737.
I’d like to be able to generate a Plan without SIDS/STARS then add them myself later but I can’t see a way of doing that at the moment (for the PMDG aircraft anyway). This way I can use the Downloader and drop the Plan right into the FMC which gives me the opportunity to plan the Dep/Arr myself.
Or you can use the free SimToolkitPro, where you can plan flights and in the advanced options you can choose if you prefer SID and/or STAR. It will connect to simbrief and generate a flight.