French superstars Solow and Cirrus Des Aigles clash in the Prix d'Ispahan at Longchamp on Sunday.
The Freddy Head-trained Solow scored in the Prix Daniel Wildenstein on Arc weekend in October, before returning in a conditions race and then slamming The Grey Gatsby in the Dubai Turf at Meydan in March.
Head has not hidden the regard in which he holds the five-year-old, who has been a revelation since being beaten over the best part of two miles in May last year, winning five in a row.
The defeat is the only blip in a nine-race run for the son of Singspiel.
Head told Racing UK: "He was very impressive in Dubai and came out of it very well. He never felt the race and took it well.
"I was very pleased as I wasn't sure he would travel that well, but he adapted very well and every morning he looked beautiful. With that in mind we can travel a lot with him, which is a good thing.
"I think around a mile or an extended mile is fine. I think he might get a mile and a quarter now, as he's more relaxed.
"I always thought he was a stayer. He's bred to run over a mile and a half and even two miles.
"He's a Group One horse, that's for sure. We'll see what he can do, but he could be very good.
"From the first day I had him I thought he was something special."
Cirrus Des Aigles needs little introduction. Now a nine-year-old, his talents show no sign of diminishing and he was a length and three-quarters too good for Al Kazeem in the Prix Ganay last time out.
Trainer Corine Barande-Barbe could head for a repeat in the Coronation Cup at Epsom next month with her stable star.
She said: "Christophe Soumillon judged the ride right in the Ganay and he knows the horse very well.
"He lets Cirrus Des Aigles do what he wants - the race was not hard for him and his rhythm was perfect.
"That win gave us a lot of pleasure and he has been doing very well since then."
The opposition to the big two comes from Gailo Chop, Pollyana and Sparkling Beam.
