We initially chose this machine as my partner and I are different heights and this has the capability to adjust the stride to suit both of us. Not the easiest of things to install but we got there in the end (it doesn't help when there is a little toddler running around the place!) The space saving mechanism is a good idea and is easy enough to use but we've not needed to use it so can't really comment on that too much. This cross trainer is smooth and quiet offering good value for money and if you are looking for a mid range machine with a good stride length that is adjustable then this will be a great choice. It certainly fulfills all our requirements!