FTR I use both as well. For the most part I'm using flex track, but in two cases I prefer using sectionals: (1) short straights between turnouts, where sectional track fits in nicely; and (2) I have a number of 22" curves, and since I'm still fairly new at flextrack, and I have a significant number of 22" sectional curves already in inventory, I'm using those. That way I know the curve is gonna be 22"...........my favorite curve on the layout is still the 25" radius, 120-degree one in a corner - the trains look really kewl coming around it - required two pieces of flextrack.