777 - I have always enjoyed. In fact I like the smaller F cabin and sometimes more personal service.
Old A380 - still good, especially when travelling in a pair. Faces forward too!
New A380 - I thought it was plain weird. Felt like a Captain Kirk seat in the middle of a room which you need a training course to learn how to operate. A lot of wasted space and same soft product. Good for a night flight where you don't care about the view.
I have a booking later in the year - 777 LHR-SIN and new A380 SIN-SYD. That's fine for me.
They are all good.