Nexus 4: Stock 4.4 or MIUI?

I'm currently running stock 4.4 on my Nexus 4 but I find the MIUI port really interesting. Is there anyone here running it on Nexus 4? If so, I'd like to know some stuff about it:

1. Is it stable/suitable for everyday use?

2. How's the battery life?

3. Is it worth flashing in general? (Yes I know it depends on what I want it for etc, but still)

The only thing that really worries me is that there's no official MIUI port for my device so I've no idea if the unnoficial port is stable enough. I have also no idea in flashing/rooting etc, so I don't know if it is ever possible to flash MIUI which is based on 4.2.2 on my 4.4 device. Looking forward for your replies.