worth picking up panthers D?

[junkiee24]

i have Sf and Ariz D.. . but thinking about picking up the panthers D .. what do you guys think? if i pick up who should i drop?
Or should i stick with the ones i got. if i do, i am playing the niners.. (dont think ariz is going to stop minn this week.)

avaliable D are:

Colts DST
Panthers DST
Titans DST
Texans DST
Redskins DST
Buccaneers DST
Chiefs DST
Browns DST
Raiders DST
Lions DST
Rams DST
Jaguars DST

[spliff]

I'd stick with SF.