In reply to Slarti B:
I can't help much with a comparison but I had a Wild Country Voyager (I.e. before they rebranded as Terra Nova) which I used extensively for 20+ years. I found the hydrostatic head on the groundsheet to be poor but I broached this with Terra Nova far too late as it was likely a fabric fault but by the time I'd mentioned it we were into wear and tear territory. I just used a footprint.
That aside, I've used the tent in all kinds of awful weather: it was last man standing on a campsite by Tryfan, it survived multiple nights of torrential rain on the Pennine Way, it's seen blizzards, gale force winds and the semi geodesic structure has always held. It was reassuringly strong in really poor weather.
The roof is a bit too flat for winter as snow tends to sit on the roof and after wild camping in a blizzard on Lochnagar the fly had frozen to the inner where the weight of snow had forced them together (to be fair, there were 70mph winds and we had to dig the tent out of drifts every few hours) but I did trust it. The mesh panels did make it a touch chilly for full on winter camping too.
I didn't replace it with the same model as the price has skyrocketed since I bought mine and it is heavy for the use I tend to give a tent nowadays but it was a solid bit of kit.
Hope this helps!