Henrys Camera in London Ontario. Their staff are all photographers, many are professionals or retired professionals. They are always ready to provide advice and assistance. I've been a regular customer there and at their branches in Toronto and Oakville.
An example of great service is that I recently bought a Nikon Z5ii, from another store because Henrys was sold out. I got something stuck to the sensor and called the store where I bought it and they couldn't provide cleaning assistance saying that they send all sensor issues out. So I went over to Henrys and asked Sarah, the manager, if she could help me even though I bought it elsewhere. She said "no problem" and that they had a sensor cleaning kit, with one open for situations like this. She proceeded to show me how to clean the sensor, check that it was clean by shooting the clear sky on manual, and prevent debris from getting on it while changing lenses by keeping the body facing down. Needless to say, I bought a cleaning kit, and always check there for lenses.