I was disappointed with 'Dilys' several years ago when I grew it, but from all other accounts (including winning a AGM), it sounds like a good one.

The rest are good, although I would grow 'Orion' instead of 'Brookside'. Both are improvements on the old 'Johnson's Blue'. Only one is necessary.

'Bevan's Variety' is a selection of G. macrorrhizum.

I like Dilys for it's late blooming time. It blooms later than most other geraniums.