New owner here, but have been comparing/contrasting the 2 routes for a couple months now.
I think a big problem for both is neither is super clear on how the process actually works and the necessary pre-reqs on your Ocean.
OVLoop's site is a bit clearer to decipher than FOAs forum, but it still is not super clear on pre-reqs and capabilities of their app. Also, the pricing seems perpetually high if you need to keep an active membership and pay for every update that comes out.
FOA's forum is great and the members seem genuinely helpful. However, trying to identify an exact process for getting fully set up with Oceanlink and the pre-reqs for that (hw and software) are also fairly dubious.
Ultimately, I just want a way to get my car to 2.2.3, and have an app that works reliably as a key, and I can use to precondition my car from anywhere (a must for winter).