The problem with the large hair chains like Vinci, Wimpole etc is that the surgeons are forever changing with no set surgeon as your come, learn and go. It is always best to research into a specific surgeon and find their track record online, their portfolio which relates to them and not a former surgeon who’s likely left and find written patient accounts on the hair forums and Reddit. Plus make sure the surgeon extracts himself via FUE and not use a technician and are full BAHRS or ISHRS members. Remember you have a limited supply of donor hair at the back. It’s as precious as gold - don’t even roll the dice on potentially wasting it and having to undergo a repair hair transplant which would then take a long time to get your result.