If it is storage you are after, then probably a four post is what you should be looking for. We bought a Greg Smith two post as I think these are a bit more useful for general maintenance and repair tasks.
I was a little unsure about putting the Lotus on the lift at first, but it is rock solid and well supported. I am not using it for storage, but I have left it up there for a week or so. I do have poly a-arm bushings. It is so light that it takes the lift twice as long to drop to the floor compared at any of our other cars.
I waited years to buy a lift, and I don't know why. Between my son and I we are practically fighting for lift time:)
Everything is easier on a lift.
Dean