I find that even my poor man's f208 gives great sense of spaciousness so I'm less inclined to upmix stereo since I purchased these couple of months ago
Judging by F208 DI charts it would seem it fires quite wide and yet those reflections are smooth. Up to 10kHz vaues of both DI's are smooth and lower than those of F228BE so I wouldn't be surprised if most folks would prefer it in a blind listening.