The Deteknix setup are the ones that i have been using for about 18 months and they are very very good and i would still be using them but the difference in battery life ie 6 hours and 30 hours is the deal breaker here,Deteknix pioneered the 2.4Ghz wireless but Garrett have perfected them because of the battery life,most folks if they are out for a 'full' days detecting prefer a much longer battery life than just 6 hours.
Mine came with just the one original option of the headphones that came with the wireless kit,but they then bought out the ones that allow you to use your own headphones,a great bonus but still basically using the same battery power setup of 6 hours,although i will say that they suggest that when you pop back too the car for a drink/food you could do a top up charge,but its inconvenience of having to plug wires into chargers etc when your hands are cold or muddy.Well i personally dont like doing it and all the other owners comment about the exact same thing 'battery life' and nothing else.