This is an ongoing question that I, too, have asked. We have sailed twice on Seabourn (1 on the (now sold) smaller Legend and one on the current Sojourn) and just returned from our first cruise on the Slversea Spirit. Overall, I give a slight edge to Seabourn. Silversea had much better food - simple, grilled steak, shrimp, salmon at the Grill, heavier (but really tasty) Italian fare at La Terrazza and nice choices of courses at the Restaurant. (There were two other restaurants onboard that we didn't try.) Service is much better on Seabourn and we found more staff learned our names (if that matters to you). Ceiling height seems higher on Seabourn and we preferred their suites. (We didn't like the in-mirror TVs on Silversea.) However, we preferred the veranda on Silversea as the furniture was a nice size - Seabourn's was too big and bulky. We loved the butler system of Silversea. Every suite is assigned a butler who takes room-service orders and is there for anything else one may need - laundry, snacks, tea etc. The pool area on the Spirit is also prettier than that of Seabourn's. Everyone is friendly, helpful and professional on both lines. Frankly, you cannot go wrong with either. In the future we will choose the destination and time we want to sail and see which line has a ship there.