3-4 moths ago I became exclusif videographer at IS. I was thinking that exclusive's treatment was better but probably I was wrong. Review time ist very very long and  same for exclusives and non-exclusives. I have still less then 250 DL and don't get extra money. One positive thing, sales are still ok but not better than before beeing exclusive. If they don't (quickly) improve the review time I'll become non-exclusive.