We have been on the Zenith the most, loved that ship but I agree it didn't handle to rough seas very well. We have also been on the Horizon and the Meridian (back in 96, that ship was tiny, it sank a couple years later, ironically it happened while we were on the Zenith in 99 ) that one was one of the rougher ones, they were making announcements telling passengers not to go outside, even suggesting ladies not wear high heels, LOL