Having had shift cables break or fray inside a brifter 3x, twice on a tandem once on a single, the $7 cost for a stainless steel
cable and 20 minutes to change is small potatoes compared to 3 hours trying to fish out the broken off head of the cable
inside the brifter or the $50-100 a shop might charge. It only takes a single wire to fray and break to quadruple the amount
of time needed to make the change. A completely broken off head down inside the brifter is even worse, happened on
our tandem and the shop actually found two heads down inside the brifter. The R brifter will be 2-3x higher risk of failure
than the L. (I know this suggests we are slow learners.......)