I was considering a snarky comment about how many dozens of threads must be findable on this topic using the "search" feature, but I will refrain.
I like my Zeagle Express Tech, which is a sort of hybrid between a jacket-style and a BP/W. It has a plastic backplate and minimalist webbing, and you can choose the size of "wing"/bladder you prefer. It packs very compactly for travel--you can actually bend the backplate somewhat--and weighs very little. It has traveled around the world with me in a backpack. I like the combination of features that it borrows from the jacket and BP/W styles. Others might take the position that it suffers because it is a compromise solution, inherently not having the benefit of the synergism of dedicated jacket features OR the synergism of dedicated BP/W features.
I like my Zeagle Express Tech, which is a sort of hybrid between a jacket-style and a BP/W. It has a plastic backplate and minimalist webbing, and you can choose the size of "wing"/bladder you prefer. It packs very compactly for travel--you can actually bend the backplate somewhat--and weighs very little. It has traveled around the world with me in a backpack. I like the combination of features that it borrows from the jacket and BP/W styles. Others might take the position that it suffers because it is a compromise solution, inherently not having the benefit of the synergism of dedicated jacket features OR the synergism of dedicated BP/W features.