We all have the same problems! Roomba 765 (a bit old and noisy, there are quieter models) since two years here: cat and SO's long hairs so I regularly need to use scissors to "free" the rollers.
Thing with the robovacs here: when you empty their bin and see how much dust they catched, you know they're very useful. We buy (and I build) furnitures and arrange our home so that the Roomba can go underneath them. I wouldn't for example buy a sofa under which the Roomba couldn't vaccuum.
Perhaps I should have clarified that only the newer i3, i7 and s9 are the models that use the new brushroller design. Otherwise you'll still be cutting hair out of the rollers.
Ha, I wish that was universally true. My girlfriend's hair is long and insanely strong. It wraps around the rollers and cuts right through them.
Still love the Roomba, but often need to replace rollers. :)