SQL Server 2014 SSIS ODBC or ADO.Net?

I'm creating my first SQL Integration Package on my new SQL Server 2014. I will be pulling data from several IBM Informix databases hosted on Windows Server 2008 R2 machines. I was researching and found that OLE DB was faster than ADO.Net and ODBChttps://datatellblog.wordpress.com/2015/01/13/ssis-data-flows-ado-net-vs-ole-db-vs-odbc/

, but then I found the notification from Microsoft that OLE DB is depreciated as of SQL Server 2012, and I'm not even sure it can connect to Informix.

https://blogs.msdn.microsoft.com/sqlnativeclient/2011/08/29/microsoft-is-aligning-with-odbc-for-native-relational-data-access/

So, before I get much further, what is the recommended Connection type? I may be pulling 500,000 records.