[ACARS] Airnav Suite - why should I use it?

[Sam 2672]

Hello all
I would like to hear views of those of you who are using Airnav Suite 4 on 
what are the features that you like or that make you use it?
In other words, what is it that justifies its purchase?
Also interested to hear of the reasons that made you stop using it.

I do not want any biased "anti-Airnav", "we-against-corporations" BS but 
just critical views from you who are using it or have used it earlier.

Thanks in advance,
Sam

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