The SMD Lunar Duo will fit taller hikers comfortably and has more floor space than any other two-man tent I've found. More hear room, too as the short curved poles that pull out the top really open things up. We've even had four of us sitting comfortably upright inside playing cards in the rain on one occasion.
I also have the BA Copper Spur HV UL2 and, unless the two people getting in it are 6' or under AND a "couple", it's definitely not a two man tent. for me at 5'10", it's a roomy enough one man tent, but I have a lighter one man tent that's at least as roomy and cost half the price (SMD Skyscape Trekker). Don't get me wrong, I absolutely love my BA products and own a lot of them (to my wife's and wallet's dismay), but their prices have gotten crazy since I bought my first Lost Ranger Bag from a decade or so ago. The BA products are now my "loaners" when someone needs something.