I am interested in using Hearing Assistive Technology to add to my Costco hearing aids (recently purchased Rexton). I have been wearing hearing aids for about 30 years and I need the additional technology. I specifically use Roger Pens Ver 1.1 and network them – so I can use up to 10 pens which means 10 microphones in lanyard mode on 10 people, around the table! However mostly I use 4 or 5 of them since that is the size of my family.
But most importantly take note of the most recent article I have written:

HEAR HERE - Hearing Aids: Telecoil Plus Bluetooth, Please!

Since Bluetooth & telecoil are used in different hearing situations, we need both technologies in our hearing aids (or cochlear implants) to take advantage of most of the difficult hearing situations we encounter.
I have experienced audiologists telling me that I don’t need telecoil, just Bluetooth, the “more modern technology.” Then they try to sell me Bluetooth devices that are costly. Someone who is price sensitive can feel taken, as I did, when I bought my first pair of hearing aids. (Telecoil is usually free at point of sale.)
When it comes to using telecoil, especially at home, the literature seems to make it so complicated that it can be overwhelming: “telecoil” is a copper coil inside your hearing aid, but to use it, you must be inside a “hearing loop” (neckloop, table loop, room loop, counter loop, etc.).
Here are some hearing situations:
For example, if both your TV and hearing devices have Bluetooth, you may be able to use Bluetooth to connect and receive clear TV sound. If you have hearing aids, without Bluetooth, you may be able to use telecoil and a neckloop to connect to your TV (or any other device such as MacBook Pro, iPad, and iPhone) and receive same clear sound. (I use my telecoil at home all the time.)
If you go to your place of worship which has a room loop available, you can hear the PA System come right into your hearing aids, using telecoil.
Your audiologist can explain the different hearing situations that would apply to each of these technologies. Think of both as putting on "virtual headphones”, but better, since the sound comes directly into your hearing aids.
It is advantageous to have your audiologist add two hearing aid settings for telecoil. one for telecoil sound only (e.g., blocks out the surrounding background noise so you just hear the movie), and the other for telecoil sound plus background sound (e.g., if you want to talk to your partner during the movie). Settings can be done for your Bluetooth as well.
Note that most over-the-counter “OTC” hearing aids, which are indicated for mild to moderate hearing loss, do not come equipped with telecoils. Be sure to ask.
Purchase your hearing aids with both technologies because each works in different hearing situations. Telecoil is usually free. If you can afford it, be sure to include Bluetooth as well.