The Gilda Compression Hand Corker is the corker most similar to how a floor corker operates. Add a cork, compress the handles, push the lever, and the cork goes in.
A friend to help hold the bottle would be a good idea when using this corker.
This corker offers an adjustable depth setting as well.
Note: When compressing the cork you do not need the handles to touch to get the cork in the bottle.
A very minor assembly is needed before using the corker. See Ferrari's video here