My wife and I have sailed on both HAL and Celebrity and have enjoyed both lines. The service on the Celebrity ships is just a cut above that of HAL. The food on Celebrity is just a bit more tasty and beautifully presented. The ships of both lines are beautiful, but Celebrity is more refined. We would love to sail on either of these two lines again, and are on the Summit in September. The main point is to just enjoy the experience and the wonderful places you will visit.