heaviest of all your "options"
i never found a 10 kg diabolo option :p
but i'd certainly give it a go

i wonder if an elevator would be impossible
(just how heavy would a diabolo need to be to counteract its own spin)
those horrible curl ups depend on your tricks and technique and string clarity 90% of the time but sometimes it just wraps
not a huge issue id say with magical henrys yellow unless you've kept diaboloing a few weeks past your strings use-by date
another reason to choose harlequins for multiple diabolo is they have a greater length than other diabolos and so are more stable
in the air (anguler momentum means it takes more disturbance to shift their axis)
harlequins harlequins harlequins
we will convert the world