Ya, I didn’t used to like the Butterfly but the newest version has the secret sauce. I can’t even put my finger on exactly why, but I’ve been told they updated the mould and use a higher quality plastic. It is more solid, more consistent and overall just feels nicer in play and in the hand. All of the ones I have play really smooth and respond well with a good string match up.
Here is a comparison I wrote up on identifying the newest version of Butterflies.