Good mechanics, patient people who don't b*ll**** you. A wide variety of stock. For example I was looking for a larger road/touring tire for my crossbike 700x32. I went to the most well known and popular
bikeshop in Wellington and the could not find me a tire any larger than 28. The guy said I would "struggle" to find a shop that stocked them. I walked into the next bike shop 5 mins away and they had several sets. The guy there said "well we don't sell many but there are people out there that use them and we have to cater for them". I know which shop I will be going in more now.