I like to look at notes that went bad, since you can learn from them, and tinker with your filters. In fact, I often look at "30-90 days late" notes on Folio, just to see how many would have made it past my filter. I've learned a lot from that.
FWIW, the original credit score wouldn't have made it past my Filter ... 660 is rock bottom for LC, so 665-670 is a red flag, IMO. There was one Delq., but it was 70 months old and would have made it past my filter. Other than that, it looks good to me, and increasing credit scores is a good sign ... no telling why the guy seems to be heading for bankruptcy ... but medical bills are now the most common (and probably unforeseeable) reason.