I'm biased because I used Sync for Reddit for years, but imo it blows Connect out of the water. The biggest complaint in this thread is the ads, which the dev is already addressing. But in terms of the UI/UX, Sync has always been top notch. Frequent updates and fixes, very smooth and intuitive interface.
I think you can change the font size and styles for both for posts and views. It's pretty customizable! But having multiple apps is a great option for comparing things like that.