I would like to add a few points.
I believe the device inserted in the RIC or RITE is a “receiver” and not a speaker. The big change over the last five years has been relocating the receiver out of the HA body and into the HA mold.
Plus - receiver in the ear canal or ear should improve hearing level because incoming sound is closer to the middle/inner ear…
Negative - receiver in the ear canal or ear increases chance of feedback, especially when someone talks, chews, yawns. etc.
And then you have to factor in the type/size receiver that’s best for the user as related to hearing loss. Things were a lot easier five - ten years ago when every thing was in the HA itself, when you used a BTE. Now you have to deal with the type HA you want, the type receiver you want, the type mold you want, the type color you want. It can get pretty complicated if you are a newbie or don’t want to do any research on your own.
I still think a majority of HA manufacturers are dealing with feedback problems, more so with the more powerful aids. Wonder when the day comes when you have wireless connection between the HA and receiver which would still be located in the ear canal, or middle ear. Removing the connect wire or plastic tubing would be nice but probably a distant thought.