I'm in the process of wrapping up the review of the Lightheart Solo.
I see you all comparing it to the Moment, which is reasonable, even though the design strategy of the two tents is very different. The bottom line is that both of these are mild weather solo tents. So the comparisons should include all of the usual players from SMD, TT, GG, etc.
Here are a few highlights from my time with the Lightheart Solo.
1. It's really, really, roomy inside. The headroom thing (not having headroom except the center peak area) is probably way overrated, and it's not an issue in this.
2. Condensation resistance is nil on the inner tent, obviously, so your stuff isn't going to get as wet as it will in the "hybrid" and "single wall" shelters. The only risk of your stuff getting wet is when you sleep through a clear, cold, still night, forming condensation on the inside of the fly, and then high winds come up in the morning to bang it off and send it spraying through the mesh. Compare this scenario with the Moment and you'll see the benefits of the double wall design of the Lightheart.
3. The views. Oh my goodness. The views!
4. Setup is painless, easy, and fast in high winds.
5. The tent is stable enough in really foul weather but none of these tents really have meaningful structure so worrying about how they do when the weather turns south is probably not terribly warranted.
6. I never really had an issue with the size of the Lightheart vestibule. My shoes and cooking gear and water bladder(s) went out there, the rest of the stuff I bring inside with me anyways, because I use my pack for padding and I like my gear inside so it doesn't blow around at night.
7. The *unique* advantage of the Moment is thus, probably not set up time, wind stability, weight with a pole, etc., but rather that you have the ability to open the vestibule a little when it's raining, and you really can't do that in the Lightheart. Otherwise, the Lightheart seems to offer quite a number of practical advantages over the Moment in terms of condensation management, views, and living space.
8. Did I mention the views? Mmmmmm....
I'm wrapping up the review this month and will get it to Addie soon for publication. I'll stamp "EXPEDITE" on it :)