Have used them for over a decade
I have used Vamoose to travel between DC and NYC 3 to 5 times a year for over a decade and have never had a bad experience. The buses are clean - including the on-board bathrooms (super clean!), the staff is courteous, the drivers are safe/good drivers. The buses always leave on time, and if everyone is boarded early, they may leave a few minutes early. Wifi has worked on all but 1 of my trips.Usually the drivers don't stop, and the trip is 4.5 hours; on rare occasions the driver will make a stop - I don't begrudge them this, they are humans, nature calls - if the passengers need to go to the bathroom, we just get up while the bus is moving. The pick-up locations in the metro DC area are convenient to Metro, and near places to grab breakfast or lunch for the trip.