Last year I ran 22 Sour 2.0 from Rebel Grown stock and it was probably the best Sour from seed I've run. Headbanger has some great sour/kush phenos I just didn't find any super dom sour phenos. That new bx2 I'd expect some really good sour phenos, his selection was on point from old rez stock. For my money in todays market I'd go with Rebel Grown, Karma or Top Dawg for sour d beans.
As far as I know the sour Bodhi used in Instant Karma was what goes by AJ Sour Diesel these days. I've never had a question as to legitimacy of cuts B uses.
That Riri cut looks nice. Only personal experience was with some older e$kobar gear and his Riri x BB.