Which card do I use? - Studying Abroad in the UK

Hi guys, I've seen several posts on here regarding which forex card is best for international travel, yet I'm still a bit confused. I'm going to the UK for my further studies, more specifically; to Coventry. A lot of people suggested me the Niyo card but i've heard both good and bad things about it. Can you guys give me some advice on which Niyo card is best/any other card which might be better?

my_qualifications: I'm a student going for my Msc and don't have any job experience.