S.L.
I have a pack-n-play with the bassinet attachment too, and I know what you mean about it being a back-killer. but when my daughter was born 4 1/2 years ago, someone gave me a Graco travel pack-n-play. it is small, but has the bassinet insert in the top (takes up the whole thing when installed, unlike the large pack-n-plays, which still have a gap where you can reach the bottom.) i didn't use it with her for some reason, but when my son was born 7 1/2 months ago, i used it almost exclusively for 5 months. i moved that thing all around my house - up stairs, down hallways, into multiple bedrooms, pretty much just wherever i needed it. plus, we have a small car, so when we traveled, that one fit better than the big monster pack-n-play (plus, to be honest, i got so used to the convenience of it, that i probably would have chosen to take it anyway!)