A few years back I started getting back into collecting vinyl (records that is) and happened to live just up the road from Sonic Boom. I can still remember walking down stairs for the first time, seeing all the racks and getting goose bumps.
It's an absolutely massive collection of new and used as well as new and old. They've got a really diverse cross section of stuff so I'm always guaranteed to walk out with some new treasure. Of all the record stores in the city this is by far the best. Friendly staff (unlike some places on Queen St.) and an amazing vibe - coolest record store in the city.