He told The Daily Telegraph: "Sunnyhillboy is experienced at Aintree, having all but won the race a year ago when he was pipped on the post by Neptune Collonges.
"He would be in the half-dozen you would pick that are almost guaranteed to get around. He is well again and I would be confident that Jonjo O'Neill has him at the top of his game.
"Against him is that he likes proper good ground and is 10lb higher in the Handicap this time.
"Colbert Station is, at nine, a year younger. He has won on all types of ground, is much less exposed and I have huge respect for trainer Ted Walsh.
"Against him is his chasing experience, or lack of it.
"He has only run in five chases, but he feels like a natural and won the 28-runner Paddy Power Chase without a semblance of a mistake. That was like a mini-National.
"There are very good cases for both horses and it is going to be a difficult choice." So if the clerk is to be believed and the going does ride on the soft side then McCoy will ride Colbert Station
He told The Daily Telegraph: "Sunnyhillboy is experienced at Aintree, having all but won the race a year ago when he was pipped on the post by Neptune Collonges."He would be in the half-dozen you would pick that are almost guaranteed to get around. H