Rock is correct. I haven't used a script for a few years now. Ever since I _sort_ or learned how to script I've been using my own stuff. Sometimes it's easier to learn to script from using scripts of others to see how things work. But you'll find on mircscripts.org there's quite a few scripts on there that are used by many.
I've seen the script "NNScript" mentioned alot on these boards but I've never used it. Another would be Invision but the best person to ask about the full benifits to using that script is probably Riamus2.
But undoubtedly the best script is your own, whether it's coded badly or not.