I didn't really make an exact comparison between the three lines, but keep in mind I have only taken the PG on RSSC. I will say that in my limited experience there is nothing that will come close to the service and personal attention on SilverSea. Of course its terribly expensive, but the combination of the small ships and experienced, attentive staff make it a memorable experience. they know your name, they anticipate your needs, and its just a very fine experience.

Also, I forgot to comment on Room Service on Oceania. Its not too good....no hot breakfast, and when they deliver they just plunk it down on the small table and leave. I wasn't happy with the presentation and there is very little variety. I did learn that if you have a Penthouse or above suite, your butler can order you hot food for breakfast, and will deliver it. that is a big perk in my opinion.......but then, I love Room Service and was very disappointed in the quality of it on Oceania.