The only snowshoes I had that ever really worked were ones I took off the wall as decoration at an outdoor camp I worked at. Massive tennis racket looking things. Probably 2 feet wide, 3 feet long. I could actually stay on top of snow with those. These new ones are no better than postholing with snowboard boots, in my opinion.
Oh they are better. No doubt about it. The are still a shit ton of work though in comparison to a split.
Also, snowshoes work better in some climates than others. In Colorado where the snow comes down so light, you don't get as much float out of them as say in California with a more stable and wetter snowpack.
Still, I've done enough snowshoeing around here to know they do offer more float than just booting it. When you are going up to your thighs instead of your waste, you won't really care though...