It depends what your needs are I guess. An air floor is light, and will go better with a smaller engine, but I much prefer a solid floor.
And a zodiac boat I always think looks pretty, but I would, after my limited experiances, much rather have a hypalon boat (rather than a PVC).
But again this means a heavier setup, so really depends on what YOU need.
Are you after an inshore cruising outfit that you assemble on the beach, or a fishing setup?
Again, Iam no expert, just my opinions.