^ Thanks for your input, Burger Lover.
I was originally skeptical of Q Mex's burger prowess -- why would I go to a Mexican restaurant for a burger? But I can honestly say I was surprised how good it was. I recently went for their 2-for-1 burger special and found the cheeseburger great.
Slow Boat's is also decent too -- and unique in the market.
For a more gourmet burger, I like Feast.