This came up in another thread, and deserves one of its very own.

Of the hundred or so roses I grow, the white ones are the worst for
getting really ugly really fast on the bush. The worst is Sombrueil,
the blooms of which in a few days wind up a ratty, flaking brown that
I cannot deadhead because it, in its third year, has grown twelve feet
up into the mature holly hedge that borders one side of that garden,
and I cannot reach them.

"Knock out" was last year's darling (or was it the year before?) and
is planted at every other strip center and hotel in the area,
presumably because of the claim that it is disease free and always in
bloom. The flip side is that its many blooms (which are NEVER red by
the way) age from a vibrant magenta to an icky pink with white edges.
The old blooms hang on rattily for dear life, so that you have a
mounded shrub full of three-toned, five-petaled blooms that look like
hell.

The perfect garden rose, if you want a red floribunda with a pleasant,
rounded shape that holds its blooms and stays true red: Europeana. Way
too old to be hip and no real fragrance, but what a rose!