Globemaster is the most costly because it blooms the longest of all thanks to its secondary florets. It is also the biggest of all.

Gladiator bloom size is smaller but much taller than Globemaster. It does multiply very well.

All my alliums get smaller and smaller every year, though.

I can't remember if I ever grew giganticum. I might have since I did try many alliums one year. It does not stick in my mind, it probably was not long lived as the others in the garden.

I actually love albopilosum/cristophii best. I flowers are gorgeous and flowerhead last a long, long time:
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