On the subject of Champions Day,last years 2nd in the sprint Twilight Son looks a bet at 8/1 with it being a race he's sure to be targeted at and where he's quite likely to get his ground.
Quiet Reflection could be a danger at 14/1 but she's still to prove it against her elders, as for the others:
Limato- Wont run on less than good ground
Meccas Angel- 5f best trip, will probably go for the Abbaye
Magical Memory- BC sprint bound,slight suspicion he's not quite good enough to win a Grp1.
For a bit of interest I've had an Ante post haymaker treble on Growl (Ayr Gold Cup)
Harzand (Arc)
Fair Eva (1000 Guineas)
Dream the dream I say