I bought my C414 XLS about a year ago, I love everything about it!
The pros:
Marvelous build quality;
Pristine sound;
The ability to choose a middle term between polar patterns;
The included hard case is very sturdy.
The cons:
I can think of one con and it comes from a pro. As the C414 has a very detailed sound and is very sensible, if you have any noise getting in the room, or if the room doesn't sound good you can very clearly hear it on your recordings.
The elastic mount that comes with the XLS isn't all that great either. Wouldn't trust it too much.
Conclusion:
This microphone is a great tool to have, you can throw anything at it whether it's an instrument, vocals, folley and so on, and it'll get the job done just right.