So, I have tried the Bluedio T2+.
The fit is a bit strange because the headband must go quite back and the cups cannot turn n all directions, but I finally found a good position.
The build is not excellent, but you will NOT, ever, find an excellent build with excellent sound at excellent price.
The sound without EQ is not very good, too much low mids and bass, muddy.
They respond very well to EQ, so you can retune them to your tastes, and, wow, I must say, once retuned they can compete with much more expensive headphones...
It was really a surprise.
The range is good, the connection also but it could give you some problems if you have more than one BT audio device and you switch all the time.
No Aptx, but as said, very good, for the prise really good.
Specially if you come from a somehow bassy headphone. THese can really do some very nice bass.
I can easily recommend them. And they are very cheap.
There are several version, T2+, T2+, Ts2.
Buy the cheapest. They are the same.
T2+ has got micro sd card reader so you can listen to music without a phone (and I did not try it, but I can suppose that the sound should be even better because it goes not through a bt chip).
THe T2- in change has got a sort of EQ presets which you activate with the push of two buttons. SO it can be good if you stream and have no other EQ.
The TS2 is apparently the same as the T2-
Bluedio is famous for complicating things with their names.
If you cannot EQ, a better option is the Bluedio R+ Much more comfortable also. Better soundstage. Highs are a bit sibilant. Low mids still a bit muddy but not as much as the T2. And bass is clearly present, just like the T2. For a non basshead they are surely too dominant. But coming from the M50 you should be fine.
With EQ, strangely, I feel I am more able to retune the T2. But the R+ also improves.
And, they do not have the occasional very very quick dropouts which the T2 have.