Which Salesforce profile to use with 'Qlikview Connector for Salesforce'?

[#1]

Does anyone know best practice for which Salesforce profile i should use with the Qlikview Connector?

It seems I am able to use normal logins and API logins, but i was curious as to which one I SHOULD be using?

Does it not matter? Or should I use the 'Force.com - App Subscription User' profile?