Package variables vs procedure arguments

Question

Is it better to use package-level variables inside package or to use procedure arguments?
I'm just asking because I have a bunch of parameters for each procedure (all of them are private, and are only called from within the package).
Is better this:
package a
is
--package variable
v_something my_table%rowtype;
procedure a
is
--do something with v_something
end;
procedure b
is
select * into v_something
from my_table
where rownum=1;
--call it without parameters
a;
end;
end;
or this:
package a
is
procedure a(inSomething my_table%rowtype)
is
--do something with v_something
end;
procedure b
v_something my_table%rowtype;
is
select * into v_something
from my_table
where rownum=1;
--call it with parameters
a(v_something);
end;
end;

Answer 1

Please post between the tags
..... and {code }
If you have multiple procedures updating and reusing the package variable you loose track of what value you have in the package variable.
And it depends what you are trying to do.