Ok ... so you know what you are doing by buying the LIVE online option... but if you are relying on a CPA so heavily you can get a local tax pro for about the same price or less who can offer you much more in the personal service arena. And I do believe that you don't always talk to the same person every time you call so many things could be missed by many people handling the same return.
As for the guarantees ... they are the same in both versions. They only cover program errors for penalties and interest on the first IRS notice. Read all about them : https://turbotax.intuit.com/personal-taxes/online/live/
