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I have a Bendpak. There is one advantage, which is the fact that it is portable. Heavy, but moveable. No holes in floor. However, please note that your Porsche will have to be raised a couple of inches on "ramps" to drive over the lift.
Also, there are areas under the car which are inaccessible because of the scissor lift mechanism.
I've used for several years for home maintenance Cayman and GT3.
I wish I'd bought a two post lift, permanently installed.
I installed an AMGO and it seems fine for my needs. I don't work on cars for a living or everyday so take into account how heavy you will use it and what vehicles you will put on it.
I have a bend pack four post, which I’m happy with. Will mention one thing to pay attention to, the lift motor draws 15.something amps, so just make sure that your fuses will handle whatever you buy.
Depending on your needs, you may want to consider a single post lift as well. Although you obviously can’t take the wheels off on the lift, you have full access to the floor underneath to move and work on your car without any posts in the way.