I hear the Tingo as having a good size stage but far from the biggest. Don't see how they come off as artificial sounding in that respect, IME. Cans like I've had like the CD780, AD700, K401, Sony MA series have a bigger stage. A couple of in-ear earphones as well.
Sounds like maybe the plastic caps they use which extend out further than the rest of the housing may be to blame. I find these are not the same to fit as the BE5 and give me trouble in one ear while the BLOX gave me no issues. If they don't go in far enough they can become too distant and too treble tilted and it all goes awry. Not surprised to hear these issues. They are neutral enough that there is no real room for error.
I get along with them fine though. In fact I'm thinking of selling my Mikros 90 in favor of them.
That being said they only beat my Toshiba a bit technically and not really for fun. My Aiwa pair sound like a bigger pair of headphones and not like buds though they need a tape mod over the back vent holes for me. So, I rate them all equal but the Tingo is quite something. Flat out better than the BE5 to me and impressive in their reach in both directions. Hard to remember a small single driver that reaches as low and as high. Also again with the ER4/Mikros resolving power for $14.99. Even some lower off mic noises they show unamped rivals the best I have heard. Of course neutral with exceptional detail retrieval is not really a need or as useful for a open earbud. So, the Yurbuds caps may be an answer for some or EQ as external noise rob from both detail and what bass they do have.
No reason not to try again with Tingo though for the prices when they have something with a different housing whether it be another of their models or a future model to come.