Yes, the proper earmold is a key issue, about which I read a great deal recently. My cShell with Phonak AOV vent gives me great sound quality, but at the expense of directionality and dynamic noise cancellation due to the 2.5 mm diameter of the vent (which is surprisingly large).
There is a screen of the size comparison (biggest vs. smallest rechargeable). For me, the large size isn’t a problem. My Paradise 90-RT is so small and wobbles on the cable so that I have difficulty using its rocker switch. My Bolero V70-P, which is chunkier in width, is perfectly comfortable.
