It may be down to luck a bit (I seem to remember something about earlier units being dodgy) but I wasn't happy with the connection quality of the pair I bought. They would cut out in one ear pretty frequently (only for a fraction of a second but it was still annoying). My mum (who I bought them for) has pretty low standards for tech so she doesn't mind but if they were mine I would have returned them. SQ-wise they were fine but not very engaging, slightly muffled perhaps. Tbh I last used them at Christmas so it's been a while. The mic is okay in quiet environments but doesn't work at all when there's a lot of background noise (but that's to be expected with TWEs at this point in time). I posted a review of the Mifo o5 a few posts back which is the only other pair I have experience with to comment on and something I would personally recommend over the RHAs.