If that Thule is the scissor action thing I would go for the Pendle hang on if you can get the right mountings for your towbar. I’ve owned both and the Pendle wheel support rack.
The Thule is well made and it’s compact BUT
To get two MTBs on your handlebars and pedals have to be very close to the rear screen/bootlid on a square backed car (estate or hatch) or you have to turn the bars/remove a pedal. Minor risk of paint loss.
Those big rubber grippers on the arms are excellent but with smaller bikes they’re so bulky they don’t fit inside the frame so you end up with extra straps. I find mine excellent for one bike and ok for two.
If you get the three bike version of the Pendle hang on there is loads of room for two big bikes with minimal faffing.
The Pendle wheel support is a pig to store and manouevre off the car ime. It is however very strong and stable and could be trusted with negotiating our way out of the EU. For occasional use I would avoid. However, if it lives on your car and/or you have loads of storage space and it gets used day in day out it would be the best of the three. Although you can’t open the boot (on a hatch or estate) without removing it or unbolting and lowering one of the support arms.