I went for a consultation after getting a recommendation, and compared with other clinics, the consultation was the longest. First, they listened to my overall concerns, and they identified my needs first by asking how much I wanted it shortened.
Using a ruler, they told me my current philtrum length, the pretty philtrum length, and the long philtrum length that needs surgery, explaining in detail how much it should be shortened to suit my face and look pretty. They also designed how it would look when shortened, and it was much better than I expected, so I got greedy and asked them to shorten it more. They said philtrum length has to be adjusted according to facial proportions, and if it were shortened more than this, it would look awkward, so this amount was appropriate, and they said it with confidence. That actually made me trust them more than clinics that say they can do everything. The cost also seems the most reasonable for now, the director seems professional, and other reviews are good too, so so far this is my top pick. The consultant told me to comfortably go to other consultations and contact them once I decide, so I had a comfortable consultation without any pressure.