Mammillaria vs. Croton

Who is the fairest of them all? Just a couple of weeks ago, a hook-spined Mammillaria bloomed:

It's very difficult to re-pot, but fortunately, only needs repotting once every few years. One more to go!  And I saw a magnificent Croton at a recent trip to the Leu Gardens in Orlando, Florida:

Which one is fairest? I can't choose!