Do all steadycams have the floating effect?

Yes I think its when the operator moves the camera down and left and then up and right like a zig zag it gives a floating effect

this video looks like floating without the zig zag but I like the zig zag effect too

http://www.youtube.com/watch?v=MfhASPG4qFk

In this one it looks like floating too its different from other steadycam that just look like stabilizers... or its the slow motion that does the effect?

http://www.youtube.com/watch?v=yAljALGYQqI

another one where the effect is seen

http://www.youtube.com/watch?v=pKVufVk0cFw

In this one its very effective I think walking around in circles and going backwards to one side helps to give that effect too

http://www.youtube.com/watch?v=iXnnNrsaITg

it looks like they are glidecam, flycam nano or merlin steadyacam and those are all very expensive to me...