Yeah the Qbank is huge, but there’s a lot less advanced questions than you might expect. I spent a few weeks doing that, but in all honesty I only did about as many questions as there are EOC’s, so I probably would have been better off just sticking with them (since I never did them before).
So qbank would be good if you run out of practice questions in your printed material, but isn’t necessarily worth the ~$300 or whatever it costs. That said I’ll still use it on the next exam…