If you don't have them already, I would highly recommend the Ownhammer IRs, the ones I like most with the 11r are the studio mixes (two 15-speaker packs, one vintage and one modern, $20 each). It seems to me that among all the offerings that Ownhammer has, these studio mix packs are the ones best suited to the sound of *my* 11r, but the v3 ones would be fine also.

The EPSi is incomplete without an Ownhammer pack to go with it..