How much will you be in the living room? That may factor in on priorities about comfort (which is subjective), wear etc.
In our family room, we got a soft cloth velour. I like it so much better than leather, which to me feels to slippery for comfort. After many years, it has gotten pretty worn… especially in the seat where my larger/heavier husband spends a lot of time. (Tip - This couch has no arm covers, so I found some hand towels same color of navy… keeps arms from wearing too badly). Perhaps leather would have held up better.