For better espresso and coffee than your typical Second Cup and Starbucks, try Aroma. Not too far from Scotia Plaza and First Canadian Place, it's nested right at the entrance to the Standard Life building at concourse level -it's SO worth the walk.
Don't have to go to the Annex's location, it's right here in the financial district... though it's a smaller version. Open concept of the store to the mall/ Standard Life building compromises this location's cafe environment: wayy too busy (with suits of course), too much noise pollution, too open.. makes it hard to consciously enjoy Aroma's awesome drinks and healthy food options. They also have more sitting across the store itself, but it just isn't the same as a closed concept and detached, tres mod, coffee house environment (like the Annex location).
Good coffee, nevertheless. Take your 15 minute coffee break here. You don't have to enjoy your beverage here, just take it back to your desk and keep on trucking.