I picked up a Curado 200k last year on sale. Smoothest retrieve I've ever felt, but the casting was annoying on lighter baits and anything that could stall, like a chatterbait.
I picked up a Scorpion MGL from Japan this year, because Curado K MGLs are about a hundred dollars more here in Canada, and was surprised to find out when I got it that it's literally just a Curado K with an MGL spool and a paint scheme, but it casts so much more controlled.
So I ordered a replacement Scorpion MGL spool from Japan, and popped it in my Curado K. It now casts lighter baits flawlessly. I was casting chatterbaits in to the wind without a problem, whereas before I'd have to put all the brakes on and still pick out backlashes.
I googled and I couldn't find anyone definitively confirming, so for anyone with a Curado K, a Scorpion MGL spool will 100% work with your Curado K, and it will make the reel a load easier to cast.
If you don't have a Curado K, then just get a Curado K MGL or a Scorpion MGL.