I don't have a favorite per se. I haven't yet bought the collectible varieties but I enjoy looking at them. I often considered going to Hitch Lyman's open days in NY but it is almost 4 hours away. Perhaps one day.
I do have this one. Haha!
I got it more than 15 years ago and I haven't bought it again for a couple of reasons. One, it isn't pollinator friendly. The second is you really don't see the inside of the flower in the garden unless you get down on the ground and lift it. Third, it doesn't hang as gracefully as the singles. One is enough to be novel. There is a large, spreading patch in the woods in my town of Flore Pleno. Someone must have planted it years ago. It is in an area that could be very wet at times and it is doing well. This year, I am going to examine how wet that spot is to make sure that's true.
Otherwise, I pick up what I find. I do like the longer, pointed blooms. I think those were mostly nivalis because that is what was for sale when I bought it.
I like narrow leaves on my bulbs. I think it blends nicer with other bulbs but I like the wider leaf too. I like all the leaf colors. I guess I like everything you don't. Haha! I really haven't developed an opinion on what I like with galanthus because I don't get a chance to see them all.
Later, I will post some pictures from last year or before. I have only bought nivalis, elwesii and nivalis verdes (?). There aren't many sources here in the US for named snow drops, Odyssey Bulbs and Temple Nursery are the only ones I am familiar with and neither were good at providing photos of what they were selling in the past. I see now you can search some of the images but it wasn't like that when I first looked into it.
Steve, who is your main source?