Hi Nicos, from personal experience YES! Curly kale is to my view softer, less fiberous and has a slightly milder flavour when picked young. It is also much more prone to slugs, snails and whitefly! An absolute B** to wash! 'flat' kale is a slightly stronger taste, but kinder in the kitchen, I soak the leaves in a strong salt wash for an hour or more to kill off the bugs before careful inspection of each crevace of each leaf - takes hours!

One of the few times when the thought of pesticides keeping the crop 'clean' is not offputting!