ZPacks Duplex Tent - Larapinta

Hi, I am looking at purchasing the ZPack Duplex. Also was thinking of the Big Agnes Copper Spur. We currently have the MSR Hubba Hubba (3 years old) which will are giving to our kids. We thought we would upgrade to a lighter tent for the Larapinta as we are doing E to E. Basically just after advice/recommendations on anyone who has either of these tents and thoughts. The advantage of the Big Agnes is we can get here in Australia, but then the ZPack is quite lighter. Thanks Sue