i bought one too - and it also was a replacement for an ultra quasar that had gone passed the point of economic repair.
now, i have not used it in driving rain or snow, so be aware. however, i've used it twice in stiff winds - once on a very exposed cliff top near woolacombe with about a 40mph wind, and the other on a bare mid-wales summit at 600m or so, again with a 30 - 40mph wind.
so far none of the materials appears to be of a lesser quality than in my ultra quasar (bear in mind this is a 15 year old UQ weighing about 3.5kg, not a modern slimfast job), and the workmanship is certainly equal. while the buckles/QR's/tensioning are a bit of a faff, they are, imv, easier to do than the pole/hole system on the UQ, particularly with cold, wet hands.
having lived in it for about a week, i can say with conviction thats it much easier to live in than the quasar - more storage pockets, its higher, and the doors are much easier to get and and out of with wet, bulky kit and to 'manage' while you're in the tent. a tiny thing, but an act of genius, is little mesh pockets in the ceiling of the inner which mean you can stuff your light in the pocket to provide illumination for cooking/reading rather than blinding yourself and anyone else with a headtorch.
so, in overview, i think its as good as a 1997 UQ, it weighs about the same and takes up about the same amount of space - i used mine in Patagonia, South Georgia, Tadjikistan, Scotland and Canada, all with stupid weather, and from what i've seen and felt, the Kangri should be as capable, but more comfortable.
i'm very happy with my purchase (i also the considered the Marmot Asgard 2P, the North Face Mountain 25, another TN Quasar, and a MHW Trango 2) the only thing i'd suggest to anyone - whether they're going for a Kangri or not - is to get some form of groundsheet protector. i went for a £5 heavy duty job from Hi-Gear.
mine is, of course, bright red...