We only had one day to visit DC and my brother had never been. Our family had done a 'big bus' tours before - both day and night. They were OK but I never felt like I had MY questions answered or that we could see well enough with a crowd. I started searching for something more intimate.
LOVED our time! We were 2 of 4 on the tour. The van was equipped with a big screen TV for all the 'behind the scenes' and historical information he wanted to share. Maps, old photos, etc. We asked all the questions we wanted and they were ALL answered. We were parked very close to the memorials and other stops. The tour guide was incredibly informed and animated; it was evident he not only knew, but loved the city.
We've already given this information to friends and family. Don't look elsewhere - this is THE tour you want!