Hi - first post so apologies if I breach any 'unwritten' rules here.

Had a good look through this thread but still quite confused so here goes...

Flying to Australia in April, and thought it would be a good idea to take the laptop to watch films, play a bit of FM etc to break up a very long journey.

Lucky enough to fly business class (not sure which carrier yet) which should mean power to the seat.

Now I know I need some sort of device to get power from the seat into the laptop but after that I am totally confused.

I think I need something like these

Trust Car-Plane Notebook Power Adapter

Kensington Universal 70w Ac/Dc Power Adapter

Electronics Euro Ultra Slim Universal Power Adaptor Kit

(The last one just looks good to be fair )

Does anyone have any views on the best option?
Am I right in thinking that the Kensington can be used in place of my usual laptop power pack? (I suspect that the Tumi one can as well )

I know that I have to make sure that the tips are compatible etc.

Any help gratefully received as this is making my head spin!