bose-x
Do you know where the Jepp s/w gets its weather and notam data from?
Have you tried Avbrief? You may not need it but it would be a useful comparison for weather data.
I use Navbox Pro, Avbrief.com for weather, the ais.org.uk site for notams, and the printed charts for actual planning for CAS, MSA etc.
Sadly I don't think one can avoid the printed charts - if the Jepp s/w is anything like their GPS databases I would not trust it to be complete.