Panniers for the Givi T680 Soft Luggage holders

[Aus_X]

I'm looking to buy some panniers to fit the Givi luggage rails for my S2R.  I thought about just buying the Givi ones, not sure which set out of their line though?
Does anyone have any experience of the Givi panniers or any other type of pannier on the Givi racks?  I take it that the Givi ones fit the best but, I was wondering if there is an alternative?

Thanks.