Best Burger I have ever had...
...was at a place I used to go for lunch in Manhattan all the time. It was $14...$20 after the coke and tip...and when I would tell people (who didn't live in NYC...New Yorkers know everything gin Manhattan is over priced) I paid $20 for a cheese burger they would say I was crazy...but it was worth it, I swear. One of the most satisfying meals to be had, regardless of price. Unfortunately, that place closed some time ago, so I couldn't dine again on my most recent trip.
Getting to the point though, the 2nd best burger I have ever had was here in the GTA at a place called "Fred's Not Here" on King Street. They have a Kobe Beef burger that is UNREAL. I seem to recall it was like 12 - 14 dollars as well, but again, it was worth it. Delicious.
If you are talking of the fast food variety, I think Lick's is overrated, but it isn't bad...