Personally NY style pizza and Chicago deep fried pizza are better than either one.
But if I had to chose (since I usually alternate these when I'm back home):
1. Pizza Hut
2. Dominos
I order Dominos more often only because they deliver in my neighborhood and the Pizza Hut is like a 15 minute drive.In terms of quality, pizza hut takes the cake. If I'm in a rush and friends are coming over at night and I forgot to order food, I usually go with those $20 deals that dominos always seems to have and it gets delivered within 30 minutes always. The dominos delivery man also knows me lol over the years so it's nice to see him. Now it's some high school kid who nonetheless was nice and talked for a bit (I recognized him).
Little Caesars are good and
Papa Johns- meh I'm not a huge fan.
If you are a New Yorker- Singas Pizza isn't bad if you aren't that hungry but personally I would take dominos over it mostly because dominos sides are pretty good and fills you up.
But in terms of quality Pizza Hut beats them all IMO. The one I go to is always jam packed so often times it takes about 30-40 minutes for it to be legit ready to be picked up. So it takes like 50 minutes or so to get your order which stinks