[Webdev] Zend Cache

[AJ McKee]

Anybody ever bought this? 

I used the demo and it was very good. But then the licence expired. However I 
did discover APC. The only drawback being that you have to delete the cache 
manually when you change a script and you need lots of space if you have a 
lot of php scripts runing the site.

So it anyone has installed zend cache and is using it in production, what so 
they think of it? Any major problems with it?

Thanks
Anton