When using exuberant-ctags what options to you use?

Using exuberant-ctags 5.8 for gcc 4.4.3 c89

I am just started using exuberant-ctags and I am just wondering what options do you add.

Here is a list and I am just wondering added too many could it be over kill.

$ ctags --list-kinds=c
c  classes
d  macro definitions
e  enumerators (values inside an enumeration)
f  function definitions
g  enumeration names
l  local variables [off]
m  class, struct, and union members
n  namespaces
p  function prototypes [off]
s  structure names
t  typedefs
u  union names
v  variable definitions
x  external and forward variable declarations [off]

I was going to use the following:

ctags -e --c-kinds=+defgpstux -R

I am just wondering: is that overkill?

c  classes                      No -- I don't have any classes as this is c
d  macro definitions            YES -- I have many macros  
e  enumerators (values inside an enumeration) YES
f  function definitions         YES
g  enumeration names            YES
l  local variables [off]        NO
m  class, struct, and union members NO
n  namespaces NO 
p  function prototypes [off]    YES
s  structure names              YES -- Is there any difference with m
t  typedefs                     YES 
u  union names                  YES
v  variable definitions         NO
x  external and forward variable declarations [off] YES