Hi Should be getting a set through in the next couple of weeks, ironically for a set of Campfire audio Comets. Will let you know how it goes. As to deciding who to go with it would probably depend on where you are in the world. If you are in the states it may be worth reaching out to Campfire direct as I believe they are going to be doing customs and tips as well, you would obviously have to go and ask in the campfire threads about those. That said there's nothing wrong with sticking with Custom Art anyway With regards to impressions make sure the audiologist know's that they are for custom in ears and not hearing aids as there is a difference. If possible it may be worth phoning them and having a chat with them before going in. Oh and make sure your ears are free of wax (yuck) before going in as they will not be able to do it if there are any issues with that regard. Good luck!