To be honest I do like a stop over on my way to Europe. Love to get out in Sing, Dubai, Bangkok, Doha, walk around, stretch my legs. Bad enough for me to sit relatively still for 10 hours plus. On 17hours non stop flight I would drive my seat neighbour/s crazy with my restlessness.Perth to London direct 17 hours. Pretty good going over as you board early evening and arrive in London very early morning, feels like a (long) overnight flight. If you can sleep on a plane most of the trip is asleep. Coming back leaves London around midday and arrives Perth midday (5am London time) so disruptured sleep/possible jetlag. But overall I found it pretty good, seat selection can impact on such a long flight.