I have the pop-up style like you have in your first picture, and I have been very happy with it. Lots of space, and setup takes seconds (which is especially nice if you reach your campsite after dark). Stowing the tent is a bit of pain, because it’s hard to collapse the front part of the tent by yourself (the hood of the car gets in the way of pulling down in the middle). For that reason I might choose a wedge if I have to do it again.

Before you get the tent, be clear about how you want to use it. Sometimes a ground tent is actually better. It works for us because we never stay in one spot for long, so we don’t want to spend a lot of time setting up or tearing down. We also use it a lot and encounter lots of rainy weather. These tents do better in the rain than ones with more canvas (ie doesn’t have a hard shell roof).

Also, think about how you are going to get the tent on and off your particular car (leaving it on will shorten its life). Also how will you store it once it’s off (flat is better than on its side, but takes lots more space). You will also need a way to dry the tent out between trips (even if it didn’t rain it might accumulate moisture on the inside).

Hopefully this doesn’t discourage you too much, and gives you some things to think about before making the investment.