Get platinum now and play with it.
No doubt, as with X3, it will be a few months to get the major bugletts squashed.
But, you may find some of the new bits are of use.
DO NOT UNINSTALL any previous version.
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It is NOT a software subscription. it IS similar to a periodical subscription: Pay in advance for period of time of support and attention. This does not mean getting monthly issues.
As has been written, the payment plan is more like a rent-to-own plan.
And: if you need to use Sonar at a remote location, not on your primary computer, you can rent the software for 50 per month. How is that not way cool?
This "membership" structure really does provide lots of flexibility.
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I am unhappy they changed the names of the 3 variations of the program. Less confusing if they would have maintained the X3 designations. But I do think "Professional" should be the top product. "Platinum" is so Pavlovian.