[eluser]mglinski[/eluser]
I would like to put forward my experience with CI.
CI is fast, blindingly fast, when used properly. When you are just starting out or when "asked to review" CI VS "other" code you just dont code with CI properly. Once you have had about 6 months practice coding with CI you know how to extract every last drop of performance. There are some cavets i have but you can code arround them if you want. The biggest downfall is the xss functions, they use over 20 perl REGEX functions, making it very slow for large text inputs. You can easily code around them or recode them to greatly increase performance.
-Matt
