I have the third gen V2. It's a good package for the money as it comes with a nice carrying case and the stock cable is actually quite nice. That said, nowadays there's just better options for the money when in comes to sound quality. The main issue with the V2 3rd gen for me is the bass which bleeds way too much into the mids. It can make them sound boomy and overly warm despite the highs actually being quite nice and sparkly.
If SQ is your priority then I'd recommend the **** Pro as better option for a "straight down cable" IEM. They're just better tuned overall.
I agree on the V2. Can't listen to it anymore, because of the slow, boomy bass, bleeding into mids. The package is nice tho. I like the T2 much, much more, and find it to have plenty bass with a good seal, but bad cable and no carry case is annoying.
The mh755 is a nice Harman iem, with extra bass, actually way too much for me but it's reasonably fast so not as annoying as the V2 for me. I need to try the "less bass" mod.
Been underwhelmed by the blon but apparently there are variations of this iem and I got the bad one. Not interested in getting the good one, as the fit was horrible and I hated the look, no point chasing it when I have a kanas pro I really love.