Hi Adriana,
I tried EmWave for a while; perhaps OK for training one's HR, but otherwise not much use.
I've been using Elite HRV with the Polar BlueTooth Smart chest belt. This gives lots of info which I hope will be useful. It lacks an important metric for me: atrial fibrillation (which I've got round by downloading the data and counting the 'spikes').
However, the real reason I'm 'here' is to contact you. It appears my email address had somehow been embardgo'd (I've just found out) and so maybe I've missed QS news. But if I understand the QS site right, there hasn't been a meeting since April '16? If so, I hope you're OK.
Best wishes, Ian