I am unable to judge the performance of the Grampian 2 as I haven't had chance to test it out yet. It is not the lightest backpacking tent on the market and there are next to zero reviews out there to view so not much to go on, that being said I did opt for a two person over a 1 person as I didn't want to feel like I was in a coffin. Had a slight issue with the tent carry sack but Tiso promptly rectified this. Looking forward to getting it out on the hills!!David Force