I don't have statistics, but I've heard good things about Celebrity and Norwegian, from people who took cruises on those lines as well as others. I've only been on Carnival. I'm not a cruise person, I decided, because I prefer more shore time and less time holding my breath to avoid cigarette smoke while dashing past the bars & casinos.
However, I can say the Carnival cruise had excellent food and great service. I have no complaints about any of that. We were on an older ship, though, and it had some engine troubles that delayed arriving at our destination for shore time. The engines stopped in the middle of the night (was weird), then resumed after a while. So the brief shore time was even briefer.
The only other issue I have about cruises is that when you return, you spend many hours just disembarking (in groups) and standing in a huge line to go through customs with all the 4,000 other passengers. it's not like that when you travel by plane, so be prepared.