Franco,
I’ve got one, which I actually have listed for sale. I can’t compare it to something like a Solo Stove, as I have never used one, but I can share some thoughts.
First, as you mention, it’s very compact. It fits inside Toaks 1100ml pot perfectly, and probably in others, as well.
It has the usual pros and cons of wood stoves. On the pro side, of course you don’t need to bring fuel with you, provided you’re going to have dry wood available to you and fire bans are not in place. There is surprisingly little ash left after a burn, so the secondary/wood gas burn appears to really work. Feed it twigs and pine cones and it’ll give a nice flame.
You have some control over the amount of heat produced, based on how much wood you feed it. Simmering probably won’t be easy, but it may be possible. I have cooked pancakes on an aluminum  pan over it, and it works pretty well. Better than a canister stove, because the heat is less concentrated, and much better than an alcohol stove without a simmer ring.
And it’s fun to use. My son really likes it, and would probably not approve of me putting it up for sale. Bring along some marshmallows and enjoy!
On the con side: unlike a gas or alcohol stove, you have to give this more TLC, feeding it small pieces of wood while you cook or boil water. It’s heavier than an alcohol or canister stove, but saving on fuel offsets that. The win over a canister stove and canister is pretty much immediate, but it would take a long trip to be lighter than an alcohol stove.
If you feed it too much wood at once, or wet wood, I can get smoky. It will burn wet wood, eventually, provided you’ve got a good flame going already, but be prepared for smoke.
Like any wood stove, it will leave spot on your pot. But that cleans up pretty easily, though pine can be trickier.
Overall, I think it’s a fun stove, and in shorter trips with my son, I do like to take it. But on longer trips, gas or alcohol stoves are more convenient.
.
