I was here in October 2011 for their One Year Anniversary Party. My friend Calvin maintained that this place had the best burger in Toronto and I must say it was quite delicious.
I got the "Hogtown Burger" if my memory serves me correctly and quite enjoyed it. It is a very different kind of burger than the much famed Burger's Priest which at the time was only in the Upper Beaches area of Toronto - they've since opened a location literally a couple doors away from The Burger Cellar - but I don't know if I would rate it better. As well, at the time I went to Burger Cellar it had been almost a year since my one and only trip the Burger's Priest in the Beaches so I had, obviously, built it up in my head a bit.
As well, I shared with Calvin the huge Duck Poutine which I recall finding to be quite delicious. On the expensive side at $11 but the portion was large and, like I said, it was quite tasty.
The Burger Cellar is definitely a way different kind of place than the Burger's Priest. Burger Cellar is a combination wine bar-burger joint and it shows through in its ambiance. Burger Cellar is way more of a sit down kind of place with plenty of seating in their dining area, a wait staff, and a full bar area which is where we sat and had our food so I can't really comment on the wait staff.
The prices are also bigger at Burger Cellar versus a standard burger joint but in a way they have the options available to justify it. Each burger can be ordered as a "AAA Black Angus", "Natural", or "Kobe" with the pricing ranging from $8 for the cheapest burger as AAA Black Angus to $17 for one of the two most expensive burgers as Kobe.
I would very highly recommend this place as a great date location as it is quite classy and they take their wine very seriously while still being a relaxed burger joint type atmosphere.