Is your Ebb Tide grafted or own root? I have seen it sold both ways. There are a couple of other dark purple roses that people compare to Ebb Tide. Twilight Zone is one, I think. I don't grow any, but may in the future.
There is a white sport of Souvenir de la Malmaison called 'Kronprincessin Viktoria'
Rose (Rosa 'Kronprinzessin Viktoria')
Don Juan is a good suggestion. I planted one this year. It is finally blooming a bit. The plant was an early season "body bag" rose. It is doing well considering its provenance. RosesAreRed, another member who lives near me, has a lovely climbing Don Juan rose. That is what inspired me to finally get it, now that I have room.
Double Delight, a red and white hybrid tea, is fragrant.
I haven't heard of Kordes Parfuma rose series. I will have to look into it! Kordes has bred some wonderful cold tolerant roses!
