Stabilizer/final rinse has a high capacity really, but there's a drawback, you have to be even more careful and even more thorough in final wash as any residual chemicals (fixer) accumulates in final rinse if reused too much. This is true to any gunk, so you get higher possibility of dust marks etc. the more you reuse. As the final rinse / stabilizer is quite cheap, it's wise to change it as much as possible.