Altai UL Basic

While I don’t have experience with the specific tents you’re looking at, my advice would be to go with Hilleberg if price isn’t a differentiating factor. I’m sure either would work great for you - beautiful products from both companies.  I have a Slingfun Portal and I absolutely love it, but Hilleberg design is in their own class. I’ve spent probably 40-50 nights in a friend’s Hilleberg, vs. maybe 30 in my newer Slingfin, and the small details of the Hilleberg win the day. Slingfin’s design is top notch and they have great attention to detail, but Hilleberg takes the same care, attention, and no holds barred approach to quality but you know that every detail has been refined through an order of magnitude more cycles of use and abuse in absurd conditions. All the cool details that sound like a great idea on paper but don’t fully pan out in the real world have been weeded out by Hilleberg leaving an absurdly refined design.  A hardware product developer by trade, I can only aspire to that level of design quality. 

Hilleberg is solid but damn those prices hurt. If you're not doing serious mountaineering the MSR Hubba series is way more reasonable and still built like a tank

People shit on hilleberg prices till they use a hilleberg in less than ideal weather. I’ll tolerate the price for the long life and ability to handle some nasty weather. Most places in the states below tree line don’t need one though.

Came here to say this… I get the ultralight thing, but if I’m going somewhere that’s a possibility I’m just gonna take my Hilleberg.

That can happen in any tent. Happens in both of my Hillebergs.

Hilleberg, TarpTent, SlingFin, Samaya. Real expeditions are more likely to choose Hilleberg. Their strongest tents are not super light, but they are made to withstand serious weather.

if money isnt a thing then hilleberg, black label series, a staika model kept me and my guide protected and safe when it snowed 14 inches on a high country elk hunt, they are awesome, im from Tennessee we dont need best quality expedition tents generally even in the eastern mountains. but having used that one for a week i can say that one was great.

I swear by my Hilleberg, but that's a terrible deal, even on a great tent.