Again, for me I want mucho headroom and a sensible door arrangement. The Portal’s doors are poorly thought out from my perspective.
I have to agree with others that I’ve never found the doors to be a problem on the Portal, indeed they are noticeably wider than the MSR ones and it’s not something I’ve ever even though about, I have been able to cook in the vestibules with no issues when needed.
And ironically, in two separate videos MSR have made showcasing the Hubba Hubba, both also show them being used with heads at the “curved” side of the doors, and the doors opening away to be rolled up and toggled towards the feet, just like the Portal. The Copper Spur’s doors also seem to open this way, towards the feet, so all 3 doors open essentially the same way.
It also has much more square, much less slopping shape than the Hubba Hubba, and a good 10cm/4 and a bit inches of headroom clearance more than either that or the Copper Spur.
In terms of what makes a tent more reliable in bad weather then yes, the mesh inner is a minus, it would be more drafty than a solid inner. But much more so than that, what makes a tent 4 season is the strength of the structure, the ability to stand up to wind and snow load.
And as has been discussed, it has several features that make it particularly strong within it’s segment.
- It’s twin main pole setup,
- the connections from the ground pegs through the poles and the inner and outer guys, taking any pressure or strain from the fabric, and the ability to add trekking poles into the structure.
- It’s use of extra strong 6.6 ripstop nylon in the fly, and the fact it’s the only true silnylon fly out of the tents discussed (rather than Sil/PU) which makes it at least as strong, if not stronger, than the others even though it is only 10D.
Of course no one is claiming it is an actual 4 season tent, it’s just borrowing lots of features from it’s 4 season big brothers, while still being lightweight and incredibly liveable and usable.