Also, what type of domes or molds you get fitted with can make a difference in the perceived performance of HA’s. With my decent low-frequency hearing, the cookbook fitting formula that most HA manufacturers follow is to emphasize user “comfort” - so typically a person like me is fitted with open domes. This allows all sound entering the ear to leak by the HA receivers in the ear, the listener hears low frequency sounds naturally, the HA’s, by picking up sounds through the external microphones on the bodies behind the ear, provide the high frequency sounds through the selective frequency amplification profile. You don’t have occlusion of your ear canals and most of the time the listening experience is “comfortable.”
The problem is that you get into a noisy situation. Now voices and noise from all directions can leak into your ears directly to your ear drums and the noise reduction or directionality functions that a sophisticated hearing aid can perform don’t work so well because no matter what sounds they select out of your environment to selectively deliver to your ear, you may still be hearing other competing stuff going directly to your ear drums. So I’ve deliberately chosen to wear occlusive molds to give my HA’s the maximum opportunity to do their stuff and I’ve found it’s pretty easy for me to adjust to the changed sound of my own voice with an occlusive fit (the “fingers-in-the-ears” problem). Custom molds or regular occlusive domes (“power” domes), if they fit the shape of your ear canal, can offer improved hearing in noisy, difficult environments. If you have serious low-frequency loss, you may have to be fit with occlusive molds or domes, anyway, as you won’t be able to hear low-frequency sounds going directly to your ear drum very well, anyway, and you’ll need to trap the low-frequency sound amplified by your HA’s to match your hearing loss within your ears (low-frequency tends to escape out of your ears much more than high frequency).
The amount of amplification you start out with, what type of user experience profile, and what type of fitting algorithm your HA’s are programmed to employ can also make a difference in how the HA’s perform for you. I asked my audiologist to start me out at the full amplification prescribed for my fit, not to gradually increase amplification over time to gradually adjust. I got switched from “First-Time User” to “Experienced (Nonlinear)” and I also decided to switch from ReSound’s fitting algorithm to the generic open-source NAL-NL2 algorithm designed by the Australian National Acoustic Laboratory. In the more modern version of ReSound’s fitting software (Smart Fit), these are all options available to your audiologist. The Verso’s would probably use the earlier Aventa fitting software and I don’t know if the same options are available there. But it’s possible that some of these alternatives, if applicable to the Verso, would increase your listening ability and enjoyment if you have an audiologist willing to let you experiment with different listening programming. Don, for example, likes the generic open-source DSL5 fitting algorithm, another possibility to try.