IMO, these two options are apples and oranges.
If you need ultimate flexibility and willing to deal with very low lift heights, then go with the Quick Jack. I would not call it "mid rise" at all, it's more of a low rise. I have one and it's been great but I really only use it for one car where any other lifting method is tough. But I rarely use it for any of our other cars. When I work on those it's usually just faster and easier to use a normal jack and stands. Although portable, the Quick Jack is quite heavy. It's not fun hauling it around and getting it setup. I'm only 42 and fairly fit and I hate dealing with it. I suspect at nearly 70 I'd have very little interest in moving those damn frames around. But if you have a small garage and need to store the frames off the ground to retain workshop space, then it can be a great option.
The TMG one will give you much higher lift heights and likely be more stable and easy to setup. Specifically, I imagine you'd want to just store it on the ground all the time, leaving it in place and just parking a car over it. If you have the room to do this so that you don't have to move it or set it up, then this is 100% your better option. Personally, my garage is so small that I can't have a lift sitting there all the time, plus the car I park in the garage is too low to clear it anyway.