Sunshine Daydream is the 2012 AARS winner.
Here are the specs:
Class: Grandiflora
Plant Habit: Rounded and very bushy
Height: 5’-5½’ tall
Width/Spread: 4’ wide
Foliage Color: Dark green, very glossy
Flower Color: Light Yellow
Bud form: Ovoid
Flower form: Cuplike
Flower size: Large
Petal Count: 25 on average
Fragrance: None noticeable
Disease Resistance: Excellent for the type, including for Black Spot
Hybridizer: Meilland International
Introducer: The Conard-Plye Co./Star Roses
Get the skinny here.