Just wanted to give a quick shout-out to the Cheeseburger in Paradise that just opened on Route 211 in Middletown. We went there for dinner on Saturday night, and although I wasn't expecting much, I was quite pleasantly surprised by the quality of my burger.
Ordered the "Not too Particular, Not too Precise," which is a pressed burger, with cheddar and Velveeta cheese, salsa ketchup, pickles, and mayo. Comes with a generous side of fries.
The atmosphere is a little "Disney World"-esque, and the 15-year old girls that work at the hostess desk and as your waitstaff aren't the most professional in the world, but for a great, cheap burger (nothing on the menu looked to be above $8 or so), I would recommend giving it a try.