Hi, In answer to your question. If you decide to go with Specsavers they have a 90 day no quibble returns policy. As was explained to me by the Audiologist that if you decide the aids are not suitable within this period you can get a refund or can upgrade to the more expensive Branded Aids that they supply if you wish to (obviously you would be charged the difference in cost). Also with the Advance Elite app there is a Cafe mode that gives you the ability to change the listening parameters with volume, balance, sound equalisation, noise reduction, speech enhancement and microphone focus as shown in screen shots of the phone app.
Many of these programs have the same sound manipulation capabilities, or you can let the auto program analyze its environment and auto compensate for you. Another plus with Specsavers is that you don’t pay for any batteries or for the maintenance contract like you have to with other suppliers.