3 years ago we were given a little stick of wood from a friends Monty Surprise apple tree. We grafted it onto our rootstock & now have several young trees. This is the first time we have seen the fruit and.. woah.. I see why they called it Monty! I thought the Peasgood Nonsuch was a big apple but these are huge.
Sadly I am not so excited by their flavour but since Montys Surprise is reported to have high levels of antioxidants & help prevent cancer I will be eating them for sure.
You can read about this variety & the cancer prevention research here & here