Just went to a Five Guys for the first time on Tuesday (N. 1st St., San Jose location).
I ordered the hamburger "all the way" (hold the tomato...tomatoes suck anymore) and a small regular fries. I figured it would be best to judge their food with just the basics.
The burger was quite large; the patties didn't seem overcooked, but they were dry. I think this might have something to do with the weight they put on them while they're getting fried. While eating the burger, the patties just kind of crumbled apart. The patties weren't seasoned at all; the bare meat did taste OK, not funky like some patty meat.
The order of fries was pretty large. The guy filled the small cup and then before handing over the bag, he threw another scoop on top of everything. The fries weren't anything to write home about (so I'm writing it here). They seemed overcooked but the insides were still soft and fluffy. They weren't seasoned at all and tasted like they were fried in old oil; kind of had a burnt taste.
The "free" roasted peanuts were kind of puzzling.
Total price: +$10 with a bottle of water.
Overall, I was not impressed.