Is PhD from UK a better option?

Is PhD from UK a better option?

I would like to ask if PhD from United Kingdom a good option for
International Students?
I would like to know from someone who has already experienced studying
from UK, like How much savings can be made from PhD funding or Research
assistant-ships ? And How does things work there?
I am Masters student in Computer Sciences here in Germany, though I'm
non-European, but still I find German universities to be good enough where
International Students don't need to pay any amount and can get like
1800-2200 Euros a month during PhD positions ! I don't know anything about
UK, can someone guide me through ?
With Best Wishes