My favorite currently are the Ferrand Dry Curacao and Solerno Blood Orange liqueur which tastes very much like blood oranges to me. Both are a curacao style with a brandy base but are perhaps a bit less sweet than Gran Gala.
I must confess I have a bit of an orange liqueur "fetish" and I tend to have at least 6-8 different kinds at any one time.
Both are fantastic, my wife goes through Solerno like I do bourbon. I think I need to try this tonight.
"Life is life and fun is fun, but it's all so quiet when the goldfish die."