Here is an extension to replace Apple's underwelming UIActivityIndicatorView:
XDSpinner
Special thanks to Benjamin at Xida Design & Technik for allowing me to share this extension with the public.
I also created showcase/demo project which allows you to rapidly change and test the properties of the spinner, and copy or email the generated code.
When I have time, I plan on adding a few convenience constructor for different styled spinners. So if anyone comes across a perfect combination of settings for a Spinner that should be made public, feel free to email me or post the code here, and I might add a convenience constructor for the specific properties, straight in XDSpinner, for example:
+ (id)yourSpinner;