For 120 there's no way I'm going to ever screw again a roll in Paterson reels. I love Paterson reels. But for 35mm. With 120, old reels have a hard time gripping the thinner film, and even with cut corners, I had troubles. So I go with SS reels.

On the other hand, I will never screw again a 35mm roll in SS reels. Too tight, too small, too much risk of buckling, which means film touching itself, undeveloped spots, ruined pictures.

Horses for courses.