My experience is that braid is great for casting.
It has low memory-doesnt tangle
It has a relatively thin diameter to breaking strain so you can cast further.
Many different types,
I use Berkley fireline 10Lb fireline for spinning, 30lb tracer for casting bait for barbel.
I am also impressed with Spiderwire EZ braid ,I have 15 lb spider wire for spinning .
I spool all my spinning reels with 15 lb berley big game mono and then a topshot of 150 m of braid more economical than a full 300 m roll.