fibre 3 is heavy and hard to spin fast and if you're not smooth then the small amount of flex you get that prevents fixed bends occurring can cause it to bounce a little.
Also if you do spiral burnoffs or leave the silicon grip out in the sun it can come away from the staff leaviing the grip so it twists onthe staff causing hopping with steves (this is from about 3 years of using one) however they are so easy to do contact with. The longer length you get the more "flex" they have. I found 1.55m to be the best balance, down at 1.40m the flex is almost gone.
I did notice the matrix staffs are REALLY long, the smallest standard one is the same length as the longest fibre 3 contact. this probably explains why they called it a matrix staff, the length would make stuff on the shoulders and matrix's a lot easier (horizontal plane stuff) however looks like it would make stuff in the vertical plane harder as the ends would get very close to the ground, not ideal for behind the back entries.
I've never used a Hop contact staff so couldn't comment but the design looks pretty standard and sturdy. although with aluminium try not to drop on anything hard and protect it from getting bent as once bent roll moves become tricky.
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A couple of balls short of a full cascade... or maybe a few cards short of a deck... we'll see how this all fans out.