I sell hearing aids for a living. It would help if I knew what you were using. If you've been happy with a low-end hearing aid, you may be happy with something from Walker's. If you've been wearing a good quality unit fitted by a competent professional, you may be disappointed, though. You should also know that most hearing aids can be repaired unless they are over six or seven years old.
Beyond that, Walker's offers a complete range, including several different instruments under the "Game Ear" name. Their top end stuff is actually pretty decent, though they're telling some fibs about what they actually do. For example, they claim one setting in their advanced instruments is for "Turkey/Elk" and another is for "Whitetail/Bear/Moose" when in fact those settings are directional microphones for background noise reduction, while the other provides broader spectrum of sound (more volume from both ends of the spectrum) for better sounding music. Lord knows how they came up with the "turkey/elk/deer/etc." nonsense.
At any rate, the Game Ear instruments are all really low end. Among other things, they are all single channel/single microphone instruments, which just means they are going to increase the volume of all pitches by the same amount and make no real effort to reduce background noise. This may be helpful for a hunter with approximately normal hearing, but if used as a substitute for a hearing aid is likely to drive you batty in a very short time. And anything that fits into place with a foam plug or other one-size-fits-all solution is unlikely to be comfortable and secure.
The experience I've had with DIY earmolding kits has been uniformly bad -- although someone who had success with them wouldn't be in my office in the first place. From my point of view, even professionally done ear impressions have to be modified or remade in perhaps 20 percent of cases. This is (or should be, by any reputable clinic) done at no charge, and where possible, while you wait. So if you are doing it yourself, you may have instant success, but if you don't, you'll be wishing you'd gone to your friendly local clinic in the first place.
