The soundstage is bigger than in more direct sounding earphones like Vido, Monk+, KBear Stellar or EMX500, but not extremely big. It actually is similar in size to Snow-Lotus 1.0, but like with a tiny bit of reverb added so it sounds more spacious than it. Reverb/echo is not a soundstage, it will sound spacious, but instruments/soundsources can't be placed there. As for positioning sounds in space I personally found everything mentioned above to be about the same. Like there is no actual difference in accuracy if you try to locate a sound source in 3D gaming. They all do 360 somewhat ok, but all fail at distance.

Paiaudio PR1 does improve that, despite it being slightly warmer and lacking in details, the soundstage is fairly big, and more accurate, you can tell which room say enemy in fps is, but accuracy is still like within several meters, so you can't tell where exactly in that room, can't just fire at specific spot.

Currently I'm trying out Qigom S300 White Lotus, it does sound most spacious, I think it has the biggest soundstage + a bit of that reverb. It is the most accurate when it comes to distance as well. Sorry for using gaming as example, but in their case I can play more or less normally, get a good grasp on distance on sounds that are gradually closing in to get a good timing when to react/prefire and such. It is not yet a tournament grade, not on par with good more expensive headphones, not a wallhack, but first among the budget earphones where I don't feel like I'm really being hold back.