I was experimenting with some list building ideas, and had an odd thought. Janson with VI is mostly a token stripper, rather than a list's main damage output. So, would it be a good idea to toss R3 on him to keep him alive and doing his role a bit longer? If not, what would you say is the best Astromech to toss on him?

R4-D6, M9, (R3-A2), R7 or the "Biggs-astromech"