In reply to Anita Grey: they are quite different tents really, one is a lightweight trekking tent and the other is a winter mountaineering tent. The trango is nearly twice the weight, much smaller vestibule but a lot bigger internally, about the size of a three man hilleberg tent. Camping in winter get a trango, in summer hilleberg. The hilleberg is more versatile really, it will do snow perfectly but is more sensitive, it is also easier to cook in the hilleberg.
I've got a trango, love it but is a lot more faff to put up than a hilleberg but I got it for £200 basically new so it was a no brainer