I love Sneaks, but I fully recognize it's not for everyone. It's a dive bar with decent Tex-Mex, but I still come here every time I go back to Toronto. Nobody can do nachos like Sneaky Dee's. Go for the fully loaded King's Crown nachos if you can, but they have vegan and veggie nachos too if that's what you need. Not sure about any of the preset nachos? Make your own! You can mix and match ingredients to get exactly what you want.
Their other food is good too, like the fajitas, but only get them when they're on special -- fajitas are half-priced on Tuesdays. They're super expensive for what they are otherwise.
Beer fan? Do not bother getting anything on tap, they're all pretty terrible. Go for bottles or just get some whiskey. The cute waitresses will respect you more for whiskey.