Personally i prefer what we do now, much easier.
30% of the final GCSE is from tests we do in class (we do 12 tests all together. 4 biology, 4 chemistry, 4 physics. The best one out of the 4 gets put forward). 40% is from tests we do in the 'hall', multiple choice (we get the chance to retake if we mess up) and the other 10% is from 'assessment grades' which the teacher marks us on... (well, you can imagine what we all get...)
So personally it works out better for me.