Two years ago I decided to add "a" new lily, something I had not done for a number of years. I asked this forum for advice on adding just one lily. A number of people offered suggestions; one person (whose name I don't remember) had a one word answer: Lankon
I took his advice and here is the result:

I LOVE this lily! It is beautiful, very vigorous (7 stems this year, 4 of them blooming), and very fragrant. My only complaint is that to get a good picture I have to lay on my back and shoot up!
I actually ended up adding 12 new lilies... 11 of them very nice and one which came up but died.