If you want lots of apples and have a larger garden the MM111 rootstock may be the solution. It is a vigorous grower, and is quite capable of supporting itself without staking.

One disadvantage is that it may take up to six years before it produces it's first crop of apples - but when it does, you will have an average of 28 kilos (60lbs) apples each year.

It can easily reach a spread of 4.5 metres (16ft) at maturity, so bear this in mind when planting. 

Pruning apple trees is not complicated, but with MM111 rootstock apple trees pruning will either need some climbing skills and / or a reasonably long set of extension secateurs. Definitely not one for the couch potato gardener!