ECC to Lotus Notes interface through PI

Hi Experts,

I'm using SAP PI 7.31 dual stack and as per requirement need to integrate the mid-office servers ( Lotus Notes Domino server) with it.

I have gone through some thread in SCN about the same and got to know that we may use XINOTES or HTTP or SOAP.

Please suggest which one is best and easy to configure?

Thanks,

Arthita