This year, I'm taking
A2 Maths
A2 Media
A2 Biology
AS Further Maths
Maths is definitely the hardest. Whilst I enjoy maths, I just don't click with it straight away, and it does take a lot of work. The exams are the easiest though (because after lots of practise it's very repetitive).
Exam-wise, Media is probably the hardest for me. The content is very easy, but it's my only essay subject so I get very little practise.
In terms of actually getting the marks, Biology is probably hardest. I keep accidentally answering the wrong question!