Japanese visitor Tosen Stardom is vying with unbeaten Vancouver as the pick of Tommy Berry's book of Golden Slipper meeting rides.

Berry is going for his second Golden Slipper win in three years when he partners Vancouver from a wide gate in Saturday's $3.5 million race.

But Tosen Stardom continues to win over the jockey since arriving in Sydney with three other Japanese horses here for the autumn carnival.

"I went and galloped Tosen Stardom this morning at Canterbury and I'm just as excited about riding him in the Ranvet as I am Vancouver in the Slipper. He's going that well," Berry said.

It was the second time Berry has been to Canterbury to ride Tosen Stardom during trackwork.

"He's such a beautiful horse to ride," Berry said.

"He's big and strong and covers the ground well."

Berry said the horse has improved from when he rode him a week ago and is convinced 2000m is his best trip.

"He won't be winning the race until the last 100 metres if he's going to win it, he'll just keep warming up," he said.

"When you first start moving into his work at the 600 (metres) he's just OK and then by the time you get to the winning post you can't hold him slow enough. It's big-building work.

"I reckon Randwick is going to suit him better once he gets there for the Queen Elizabeth Stakes but he'll be hard to beat at Rosehill anyway."

Kerrin McEvoy has the ride on Silent Achiever, the Roger James-trained mare which won the Ranvet and BMW Group One double in Sydney a year ago.

"She was a good fourth in the Chipping Norton Stakes last start so you would like to think that 2000 metres suits her better, especially at Rosehill," McEvoy said.

Tosen Stardom, a four-year-old by Deep Impact, has won four of his eight starts in Japan including a Group Three race over 1800m at his most recent start in December.