I’m considering buying this Echinocactus horizonthalonius. It’s supposed to be one of the only (if not the only) Echinocactus that will bloom when small, young and in a pot. It must already be a few years old too from the size of it. The flowers are large and pink in the spring. Fragrant too apparently.
The thorns are pretty cool looking for the rest of the year it isn’t in bloom.
Echinocactus horizonthalonius
Very tempted… It is expensive but it looks like it’s already a few years old so maybe it’s worth the price.
All Andrew's Plants 
Those thorns are very interesting. Some of them almost remind me of weird toe nail growths. I'd say pick it up if you have the money and space. Then again, I'd pretty much say that for any plant…