SAP HANA Variables and IDT Parameters

Hi all,

We'd like to know which is the best practice about HANA variables.

Hana variables aren't flexible as IDT parameters (e.g. you can't create a list of values with more columns in HANA).

Which is the best scenario?

1. To create a variable in HANA and pass it in IDT(Information Design Tool) through a parameter.
2. To create prompt in IDT with a parameter without using HANA variables.

Are identical in performance?

Your help will be very much appreciated!

Regards,

Giovanni