We have the Rick Steve's convertible carry on and they are wonderful. We each used one as our primary piece of luggage and it was so easy to carry. We managed to get get everything in it that we needed for a two week trip to Italy and it felt great not having too much with us. We'd land, grab our bag from overhead, and then hit the ground running. They run about $99, although you can find them on sale at Rick's website or on other discount sites as well. My kids have sinced used them, too, both bringing them to Spain.Again, this as their main piece of luggage. They hold up beautifully and I highly recommend them.