Markus is a lovely chair, got mine a couple of weeks back, and recently I have been using it 8-10hours a day and find it a lovely chair to use, I suppose the butt support could be a little more padded, but other than that it's genuinely comfortable. Back support is good too.
Box fit in the boot of my Focus. I thought I might of had to put the seat down but then thought I must not have considering there was 4 of us so it's not massive.