AV-20 cs G5
Philippe
Like I told you on the phone, it depends what you're planning in the future..
If you're looking at just a Back Up AI, then the G5 will be better as it is bigger and will interface with any future Garmin EFIS you may add ( G3X etc....)
If on the other hand you're looking at the future ADS-B requirement in Canada, then the AV-20 is a better fit because you will only need to add a Tailbeacon X to be compliant ADS-B OUT anywhere in the world, including the USA..saving money and installation time..
But as the owner, the decision is yours..
Bonne chance
Bruno