I'd been once before and did the drive through. A chef/colleague said that it's his favorite burger joint in town. My first experience was good but I wasn't blown away. Bacon cheeseburger with all the fixin's and fries. Good.
I tried again since I was craving a burger while running errands and went inside this time. Service is excellent. Neat little set up though dated and HUGE menu. Prices seemed reasonable but toward the higher end of fast food fare.
This time I ordered a patty melt with bacon, to go. Ate it in the car. It was good, but again I wasn't blown away. Rye bread was grilled well but didn't have any pop. Burger was well done, and I understand that, especially for a thin patty. Melty American cheese. Standard. Grilled sweet onions. Standard. But the patty was a bit dry, maybe chewy, not like a juicy patty but a little rubbery I guess.
Overall it was good. I'd go again if I'm in the area. I'm interested to try some other menu items to maybe get a more rounded experience. But if you're called the Burger Factory, it's likely best to focus on the burger instead of trying to do everything else. Just my opinion.