Thanks
@Sweiss_ , got mine today after eyeing it for like 3 years (Could've gotten it when it was under R5k). Funny how after I ordered it I was watching Silicon Valley and the "CEO chair" was actually the same chair so I guess you could call it fate.
I have both the Herman Miller Aeron and now the Merryfair Wau so I'll just give my 2c. The Herman Miller is better constructed and feels like it will last 20 years, the arm rests are much more comfortable and can turn inward a lot more than the Wau. Adjustability wise I say the Wau has the edge just on the lumbar depth front and the headrest, even though not really used while working, when leaning back it's a lot nicer to lounge in the Wau.
Overall I would say can't go wrong with either but since I took my Herman Miller to work I needed something else at home to not sit like a gremlin. Only complaint is the arm rests feel a tad too far from my body (173cm & 68kg) so if it had side to side adjustment it would've been perfect. Oh and now that I've upgraded my chair feels like I need to upgrade everything else.