Mountain Hardwear Direkt 2 (2 lbs 9 oz or so) has received good reviews. The tent may be a bit warm for summer camping (no ventilation) but should do great in windy/colder conditions.

Here are a few good reviews.

https://nextadventure.net/community/blog/mountain-hardwear-direkt-2-review
and
http://www.sierradescents.com/reviews/mountain-hardwear/direkt.html

It is always a trade off. Do not underestimate the value of good nights sleep. Always try a tent on for size before purchase, light tents such as the Direckt are nice, but really only suited for folks on the shorter side. Be sure to lay down inside the tent in your preferred sleeping position to make sure that you fit. At 6’1″ I find I need a tent longer than the Direckt to get a decent nights sleep. If you are only considering spring (and summer) you need much less tent than in winter, where the days are short and you are likely spending 13 hours or more per day in the tent. In spring in decent weather you can go without vestibules, as you can cook and hang out outside. While superlight tents are nice in the pack, sometimes carrying a little more weight is worth it in terms of comfort and a good night of sleep.
I like the Hilleberg line, still double wall, but they have reasonable weights, and enough models to fit just about anyone’s needs.

Plenty of good suggestions already here but here’s my 2 cents.

I have had good success with Black Diamond megamid style tents. For spring tours you can’t beat them for light weight. You can use your ski poles like I show below and easily sleep three or there is a slightly ninga way to dig out the sleeping area a bit and use multiple poles (avoiding having any pole in the middle of the tent) and sleep four (although this last technique is not the best in wind). These tents are obviously not heavy four season bomb proof exped tents but I have spent many windy nights in the mountains when they did fine. Probably the windiest night I’ve spent in the alpine was in a Golite megamid type tent that help up fine.

The betamid (or similar from another manu) is a great choice for two.

One serious drawback with these types of tents in spring/early summer backpacking is that they are not bug proof. There are screen inners you can buy but I’ve had decent success with putting rocks around the edges and sealing the skeeters out that way…sorta wack but it works.

For more full on winter conditions, I like the BD HiLight (or similar). I’ve been pounded by storms in these and other than having to dig away the snow trying to crush in the walls more often than with a full on everesty 4 season tent with 34 poles, they’ve worked great.

I think double wall tents are awesome when someone else is carrying them or I’m base camping and the approach is mellow or someone already stashed them but if it’s a significant tour, personally I’d rather save the weight.

Many of the lightest tents are trim to save weight, I’m totally fine with that tradeoff but if you’re not be sure to doublecheck the size.

oohhh and i would recommend those big agnes tents as well, they are sweet!

there has been a few issues with the durability with the big agnes flycreek tents, mostly in the stuff sack ripping.

big agnes has an amazing warranty program and they will repair or replace any issues super post haste. they are a good company.

this is a bit of an investment, and sounds close to a “know thy tent neighbor very well” 1.5 person kind of tent, but I think it looks pretty cool for winter expeditions and keeping weight down.

http://sectionhiker.com/brooks-range-mountaineering-ultralight-tent/

I only found out about this tent when I saw one for sale, can’t remember if it was splitboard’s swap section or on geartrade.

(edit-but after reading that full review, maybe not the most comfortable choice for 2 in terms of condensation/ventilation)