Sheila's Perfume had gorgeous blooms in spring but behaved like a miniature rose when temps shot up. They still look very beautiful to you in the photos but blooms are small with just a hint of fragrance. Bush has been suffering with iron deficiency which I have tried to address. It's hard to maintain a correct pH in pots.
Even in hot summers, shocking blue retains nice spicy fragrance on medium sized bloom. Bush is doing great in a 14" pot.
St Swithun is a fairly good performer in high temps. Fragrance is nice in the morning but no fragrance during day. Bloom size is medium but the shade is very light pink now as compared to spring when it was darker.
Spirit of Freedom was planted in a 18" pot on 26 Jan this year. Didn't bloom in spring though the bush grew well. Now it's blooming, bloom size is medium with a nice shade. There is no detectable fragrance.