Jeppesen...
It's a great system when it works - it's always accurate with the fuel burns and times en-route - but has a pretty bad habit of not giving us the correct routes in the first place.
IFPS in BRU seem to be aware of it, as they groan when you say which system gave you the route.
It's not SRS compliant - although it was promised, initially, two years ago; ending up with endless SRS reroute problems - although it doesn't apply to us (we pay for unlimited flight plans) but other operators paying by the flight plan get clobbered twice when really the system should get it right first time.
On the whole it's not a bad package - Customer Services are a little vacant sometimes - depending on who answers the phone, like everywhere the ones who've been there a long time are good - the others? well, experience makes up for everything doesn't it?
I don't honestly think there's a better solution for the exec operator - all the others are based on data from Rockwell (I believe - corrections if applicable please) who are the holding company for Jepps, so it's got to be the best really???
Designed on the system that sent man to the moon! Bet they didn't have to have an SRS reroute....