I use wTicker since a couple of month and I'm very pleased with it. It's a heavyweight with a lot of features and to get started was kind of hard, but after checking out almost every aggregator around, wTicker is clearly my choice. It's one of the best you can get.
Have a look at
http://www.wticker.org
Current download (changes frequently)
http://www.wticker.org/user/files/wticker_0-2-2-97.exe
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