What editions does the data wizard work with?

The data wizard works with all In Mailchimp account types and Salesforce  Professional Edition and above. When importing data you can choose between a:

• Salesforce Report (up to 50,000 records per report).
• Salesforce List View (except with Professional Edition)
• Salesforce Campaign
• SOQL query

Limits

Salesforce reports - Salesforce has a hard limit of 50,000 rows in a single report import.  Keep in mind you can create more than one import wizard. Or you could filter your report to include only recently changed records and have it run on a scheduled basis.

SOQL and List views don't have any limits however you cannot use a list view if you are on Salesforce Professional edition.  This is because Salesforce have limited API access for Professional users.