The road to glory cannot be followed with much baggage.
Richard Ewell, CSA General
i have set up Tiger Walls (2&3p, regular and carbon/Dyneema) and we bought the Copper Spur instead.
The side entry really makes it a huge improvement.
That said, my wife and I now use a triplex. The duplex has a freestanding option (with an external frame) that sets up dry in the rain.
Depending on budget, etc you might want to look at the ZPacks duplex with the freestanding option.
I loved our half dome (with replacement pole set) but it was heavy.
On the PCT the Copper Spur comes in highest rated by actual through hikers.
The last three years the duplex has increased in use on the AT. It can be used with hiking poles or with the freestanding kit.
For two, the Triplex works well, but is not freestanding.
The Ghost just ventilates too well. The My Trail Co condensation was the heaviest I’ve met.
Front entry tents are just not my cup of tea.
Anyway, my thoughts.
Hubba Hubba is a little more freestanding than the Fly Creek 1 and a little heavier but side entrance. I have been able to use them both not staked out.
Your wording makes it sound like the Tiger Wall is not a side entry tent, which of course it is. I basically see little difference between the inside space of the Tiger Wall vs. the Copper Spur. The Tiger Wall (UL2) is almost a pound lighter, the Copper Spur is a true free standing tent. There are no other real differences, other than the Copper Spur is also probably a bit more durable.
I also own the Duplex, and yeah, that freestanding option for that choice might be the ticket, though by the time you add the free-standing option to the Duplex, you're almost to the weight of the Tiger Wall. Still, there are other advantages to the Duplex; the dyneema fabric doesn't absorb water nearly as much as Sil Nylon, so a packed soaking wet Sil Nylon tent adds a lot of weight (8-10 oz by my home experiments) over a dyneema tent (a few ounces), and as we all know, you have to pack a soaking wet tent quite often on an AT hike.
I ramble, but I do own and have extensively used almost all of the tents mentioned in this thread (including the Fly Creek and 1/4 dome).
All three tents are awesome choices. The 20% REI coupon is good for about another week if you choose anything but the zpacks (Duplex) options.