Originally Posted by
rjones28
The one that fits your frame.
I kinda lucked out in that both the Habanero and Roubaix have threaded BBs. I replaced the Habanero one a couple years ago at roughly the 40K mile mark.
Fun fact: Shimano changed the diameter/spline pattern on their BB about 8 years ago, so you need a different tool or a plastic adapter if your toolkit is old (mine was).