LeeAnne,
I have sailed on Crystal, Seabourn and Silversea...but not on Radisson- horror! Crystal is like a very, very, nice mass market ship. There are huge lines at the buffets on deck. Room service on the Harmony is worse than RCI. Crystal commented that the Harmony is just not really set up for room service and they are aware of the problems. If you like room service, don't go on the Harmony. The staff are well trained but I found them to be snootier than the passengers (just a few individuals). Where Crystal really shined was in the food department. My hubbie and I thought that their food was far superior to either Seabourn or Silversea. It was more interesting and more seasoned. Plus the bonus of having a Japanese and an Italian restaurant gave us more variety. On Seabourn and the Silversea the food is very good but we did get tired of having French/California cuisine EVERY night. The food on those two lines seemed a tad too rich and too bland. My next cruise is on Seabourn. I love Seabourn because of the intimacy (200 passengers) and the feeling of being a guest because it is all-inclusive. I understand there is more of a guest feel on Radisson too. On Crystal I felt more like a number.