Finding a Chinese Input Method that is right for you isn’t easy. They all have their unique features or problems, the symbols are all in different places or they react differently based on your input. While the built-in input methods in OSX and Windows are good enough in most cases, they aren’t the best.
If you’re looking for a free input method that has lots of options, and is highly customisable, then Yahoo! Key Key is for you. Available for both Windows and Mac OSX, and supporting Pinyin and Zhuyin smart/traditional phonetic input (and also Cangjie and Simplex if you’re that way inclined), Key key features a ton of options allowing most parts of the input behaviour to be customised. Key Key also features related phrases, Traditional to Simplified Chinese realtime conversion and ‘One-Key’ access to Chinese/English dictionaries and Yahoo search. Best of all, it’s free.
What input method do you use? Pinyin or Zhuyin (or other)? Tell us which input method you use and why you like it in the comments!