I'm torn, because I used to be such a hardcore fan of Kline's in Manassas, especially the Boston Shake. I thought I would give this place a try and its now my new favorite ice cream joint in all of Northern VA! While Klines is still very good, I would give a slight edge to Nathan's, as I find their icecream, well, creamier. They have some very cool flavors and the portions are HUGE, especially for the price. Give both places a try, and decide for yourself. A MUST stop place if you are anywhere near Manassas.