net 10 sim questions



I currently have a net 10 zte merrit and it has a net 10 sim card in it, I was thinking about buying a new (well used but new to me :) ) droid phone that is compatable with net 10 and has a space for my sim card but I would like to know if this one will work of if i have to go but the sim that net 10 offers. Its only like 10 dollars but still I don't want to waste the money if I don't have to thanks in advance