I enjoy both ballet and opera but have only booked 2 performances of Nutcracker in this period at £32 each. I used to regularly sit towards the back of the amphi and accepted the compromise between cheaper seats and a lesser view. But the higher the price of these seats increase the less that compromise seems worth making.
I have taken up going to Encore performances at £15 a time and have a seat where I can see everything. It's amazing just how much of the detail I was missing from the back of the amphi.