My requirements these days are very similar to yours Stephen, so I agree with what you've said. I also use my Z6 for family days out with my very active 7 year old son. So far, the Z6 hasn't let me down yet in that regard either.
Managed to get out with the camera this afternoon for an hour, and headed to a favourite haunt of mine - the Infinity Bridge in Stockton on Tees
Infinity Bridge by Simon Harrison, on Flickr
Really lucky with conditions, as while you can get good reflections reasonably regularly, it's not often...
Just scored a new Z 50mm f1.8 for £269 delivered from SRS Microsystems. They'd discounted the winter light price by around another 10%, and I won one of their social media photo competitions last month which gave me a further £50 off it. Only problem is that they're out of stock just now...