The new Queen Elizabeth is a very nice ship with tons of entertainment options onboard.
Now, if I could cruise on only one, it would be the Queen Mary 2, but I take Queen Elizabeth as my second choice. It has more shows and more dining options than Queen Victoria.
These Cunard ships are tailor made for socializing with fellow cruisers - lot of classes, enrichment, etc. Nice night balls in the ballrooms too. They really feature a lot of dancing.