Long Run or Mad Max for Henderson?

Question

Nicky Henderson has won the Arkle three times (2000 Tiutchev, 1993 Travado, 1991 Remittance Man) and he’s got six in the race this year. But the best two look to be French import Long Run and the recent Kempton winner Mad Max. That said Long Run’s also in the RSA Chase and he look a bit more of a stayer.