The service at this place is top-notch, the service is far beyond any of the 3 other places I have dealt with. They really try to ensure that you have the right mask, supplies are easily order-able online or at one of the stores, and follow-up services like sending reports to your physician or an annual inspection are taken care of very well. The one caveat I'd give is that currently they are not an authorized provider for Great-West Life. Check with your insurance provider before using if you are depending on insurance coverage beyond what OHIP provides