diffs between c4 and aod tranny

I am picking up a a 5.0 302 and a c4 tranny this weekend. The tranny is being thrown in for free since it is attached. Currently in my 88 I have a AOD. Is a c4 better than a AOD or vice versa? Not really thinking on a switch unless there is a large jump in performance or benefit. Any input on the diffs and advantages of each would be great.

Thx

PS I did do a search but found nothing comparing the 2.
 
there are some things that you need to put the c4 in there. you have to change the crossmember (well not change it, but grind off the welds and adjust it to fit) and i dont think the stock shifter will work with a c4 also. if youd like, you can send me the c4