Most of the time it's tulips. They're classic, not overly fancy, come in a ton of colors and a few different petal shapes if you need something a little extra, and they just remind me of spring and the shape makes me happy.
The one I like that's out of my league is the fuchsia. I wanted one for a few years, kept forgetting to buy one, and last year I finally got one. It was about double what I like to spend on plants because half of them die because I'm an over-waterer. The fuchsia lasted a week. ๐ฃ
This thing looks magical though, and I still can't believe it's from this planet.