Hi CRJlover,
I worked well with PPS,LIDO,Jepp an now EDS (Skytrack)
Could tell you,that it all depends what your needs are.
PPS is cheap and Ok for small companies or private owned corp flying europe. Tehy are working on an Internet based application.
I`ll guess something same like from UVair.
EDS, with what I am working now, is easy to use, fast, reliable and worldwide ops possible.Including is a very useful graphics interface (flight globe) where you can see your flight on a worldmap including Awy,FIRs,Areas,VOR,NDB,Waypoints and other useful stuff.
Cost are between Jepp and LIDO.
LIDO would only be helpful for mayor airlines and is used by LH,AirBerlin,LHCargo, Condor....very expensive!
Jepp for me is not very friendly to work with and had too much flaws.
But as always in this cases.....this are just my 2 cents!
Best regards