Did you buy the UB stand? The Jolly Jumper one? Or, did you just place the bassinet on a flat surface?

We are planning to get the Uppababy Vista stroller, but I don't know how much I'll get to use the bassinet since we have stairs to go up and down to our apartment--it seems like it would be easier to have the baby in the infant carseat and adapter in the beginner (easier to pick up a sleeping baby still in the carseat than out of the bassinet). But I know a lot of people have their babies sleep in the bassinet in the beginning, so curious where they have it.