I agree they do well, but I've also found watering them becomes a little trickier during the summer. Mine aren't in very much soil and they dry out so quickly. And I've had bulbs rot when there was too much rain.
So do you replace the soil at all with your plants? I've been thinking mine would be grateful to have something else to work with, because I don't fertilize very much.
Here's one that took a 3 year break, but it bloomed last year and now it has a baby bulb growing on the side. When it gets big enough I'll split it off and replace the soil for both of them.
Dora