Not exactly the same as normal Gmail, this option lets you keep using a custom domain at $0/month, which basic Gmail doesn't offer. To me it's 100% worth it as that was my main concern (with so many accounts bound to my domain email).
>I do in fact though still have my google voice on my personal no-cost accounts still working. Logging into each account and going directly to http://voice.google.com
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>*this seems to work with already established voice accounts, and new ones cant be made for account on suite legacy anymore.
The catch is, as soon as you migrate you will lose your gvoice number, since that is not included in the "all free services will be migrated".
And then it will be too late to research alternatives as you lost your number and will start paying (and then realize your old number is long gone :)