How did you chose your clinic?

Bare with me, I have searched and read - I even have a spreadsheet going but I'm still struggling to chose which clinic to go with. I'm fortunate enough not to worry too much about cost, so that's not a key criteria. My key issues are range of stock, quality and service - I can only read so many reviews online before they melt into one. I think I've found all the clinics then there are more?

So how did you pick? Recommended by a friend or just pick clinic at random and see how it goes?