The impeller on my Bubble Magus (Eheim 1260) just busted too! I'm about to pick up a Curve 9 and by the sounds of it I should pick up a spare impeller while I'm at it

Actually that doesn't bother, so long as a have a working skimmer that skims awesome ! The impeller takes quote a beating. It is spinning 24/7 and i'm sure random junk gets sucked in there and mangled up.