I thought I could share my experience with others. I cannot install proper 4 point lift in my garage due to its height. Whenever I had to do anything under the car I had to put it on jack stands - it's a real PITA if you have to do it often... Couple of years ago I came across a Quickjack page in US but cost of import was ridiculous. Until now - they have few distributors in EU (Holland, Germany and Estonia). I bought it and I cannot be more happy! Now it takes 4-5 minutes from thinking "well, I should have a look at xy underneath" to actually lying under the car and looking at it. It can be as quick as 2 minutes if you keep the ramps under the car. Super simple to operate, takes minimum space, lifts the car up to approx. 60 cm above the floor (can be higher when rubber blocks are doubled up). I'm so happy that I really cannot find any downsides of it, maybe except for the price, but for the folks like me, not having too much space in their garage, it seems to be the only option. Unless someone likes to put the car on jack stands back and forth...
I bought BL-5000EXT, it's a perfect fit for W124 and very tight fit for Porsche but luckily I can use it for both. See some pictures:
Here it is stored:
Here is the power pack - I modded it a bit. It comes with rubber feet but for ease of move (it weights 20 kg) I changed them to wheels. Shifting it around the garage is a breeze now, my sour back cannot be more grateful for this
My post may look like an advertisement but I have 0 affiliation with the maker or sellers. I'm just a happy user sharing my experience