So I did try Freddie's a few days ago. I was happy.
I didn't eat lunch that day and it was 6:30, so I got the hot dog combo and the double cheeseburger. You can't go wrong with a Vienna hot dog, and theirs comes on a toasted potato bun, which is a nice touch. A hot dog, shoestring fries and a fountain drink are $5, which is pretty good.
The burger was good as well — I give it a 'B'. The only reason I don't give it an 'A' is it didn't quite have that great intense burger-y flavor.
It was busy but the food came out quickly, and the staff was very friendly and helpful. I'll definitely go back, and probably sooner than later.