Half the time a spinner wont roll in a straight enough line to push it down an aisle and you still end up picking it up. I don't think spinners are very useful and the larger the bag is..the less useful they are (my under seater spinner works ok)

Honestly i am almost to the point of wishing carriers would outlaw all roller boards on flights unless they plan to make the aisle's wider (and they don't) and force people to bring on only back packs and or laptop bags or cross bodies or dufffles. I am even starting to hate rolling luggage in the terminals...it is always every where, in the way and just generally a hazard.