My option is either a similar setup, with one sliding door, or two double doors opening outwards. Both types have their pros and cons, such as two doors opening provides more of an opening when both opened, but they will obstruct the patio to some degree. Sliding door/fixed pane should end up with less "plastic" in the middle to obstruct the view, but it will only give me half the opening width.
What are the best type from a reliability point of view. If I get sliding doors, I don't want to have problems with the wheels in a few years time. With two doors opening, as the opening is large, it means that the two doors will be wider than normal. Does this mean more strain on the door / support leading to sagging etc. in the future?
How do the two types compare cost wise - is there a lot of difference between the two?