The eternal debate among Leslievilleans is where to go for their coffee - Mercury or Te Aro Roasted? The little grungy guy or the spacious giant with fresh roast in your face? Being exposed to loud indie music, or trusted moody pop? Random bluegrass double bass or monthly cupping seminars?
Though I don't live in the area, I definitely sink a lot of coin into Leslieville. Since my life has yet to revolve around a stroller, Mercury is typically my preferred spot of the two, despite having a pretty significant stamp card at Te Aro. When my favourite barista at Crema (Yonge & Bloor) migrated to Mercury, I followed him because apparently it was one of the best placed to obsess over coffee in the city.
Not that the environment or people have much to do with their espressos. The drinks at Mercury are at the top of the Toronto espresso food chain. They are the rulers of the Serengeti, so to speak. Try a cortado and you will see. It is thick and creamy with a balanced flavour that brings out the espresso but softens the bitterness.
Don't let anyone tell you otherwise; Mercury is worth a visit.