Sorry to wander off half way through my list!
Your criteria are pretty much what I'd have written if I'd had a moment to finish.
Emmaljunga are fabulously built and go for very little on ebay as they aren't very trendy.
I've had 5 of them, similar models...very nice but I'd not buy one new. The main problems with them are weight in terms of pushing, and no swivel wheels - however they have brought out one called City Cerox since then and it has swivels, not sure how heavy it is.
Weight is good with a small baby but not a hulking great three year old!
Also I'd say air tyres are necessary, they make all the difference when you have a larger child, seriously it's much less work pushing a buggy with giant wheels than a maclaren type.
As for my perfect pram - my favourites this far have been: (in no particular order)
Quinny Freestyle 3 wheeler - beautiful quality, easiest thing in the world to push with heavy 3/4yo in it, but basket was rubbish and it didn't swivel enough, just tilted.
Mountain Buggy - perfect in many ways, but it tipped too easily with shopping on the bar, or when child tried to climb in and out at the front it would tip sideways.
Basket was good, light to push, sadly not rear facing but you can use carrycot with it initially.
Easylife sport - very heavy, a bit too heavy really when you add child and shopping. More solid than MB and would never, ever tip and can take up to about a 5 year old or more, which most of us don't need it to - but still
Emmal Edge duo and Teutonia mistral type models are very nice but again, heavy and no swivel.
For time being I am reverting to my old M&P pliko, while the bugaboo wafts merrily off to its next owner
Why Oh why did I sell it?!!