Thanks to Prize star Picaroon for an entertaining and elegantly clued challenge this week.
About median level difficulty IMO, but with a plethora of clever and deceptively worded clues.
FOI 6 (took a while to get started), LOI 21. Stalled on 20, which took a high percentage of solving time. Needed to summon Google to fill in the final word of the long compound solution. I inferred one fairly difficult solution from a medallist in Peer Review 644. :-)
Enjoyed too many clues to call one COD. The short list included 29, 23, 14, 18 and 3, which slights several other contenders.