Haven’t been to the first 2 but have been to Volt (I was given a gift certificate). It was unsurprisingly excellent. As long as you avoid weekday afternoon rush hour (heading north) Frederick is a pretty easy 40 minute drive straight up 270, or as short as 30 minutes if you drive fast like everyone here does.
Have you already called Volt for a reservation? Each of the last three times my sister’s visited we’ve tried to go there and it’s been completely booked each time. I don’t know if that’s it’s typical state or our bad luck.
Good Stuff Eatery and We The Pizza have very good food! When I was at Good Stuff the lines were long, but it was a Saturday night. God Stuff Eatery is burgers and fries - very good burgers and fries.
Good Stuff is a great burger place. They also have amazing milkshakes. The hamburgers are kind of small, but if you get a hamburger/fry/shake combo, it’s more than filling. I recommend splitting the fries and possibly the milkshake (depends on how big your appetite is). Haven’t tried the others though.