Regent does have excellent suites; no doubt about it. We have different measures of what is excellent food and service...but that, I guess, is why they make vanilla ice cream and creme brulee. There are very few folks who cruise on Silversea or Seabourn that find Regent's food or service to be on the same level, but alas there are some. Just being objective.
As for Crystal, it has three types of seating: Early, Late and By Reservation (so you can dine when you want and with whom you want). I am pretty confident that is going to change to true open seating because many of the folks taking advantage of the flex time use it to secure the same table with the same folks at 7:30 rather than 6:00 or 8:30. Again, I think the food and service is superior to Regent's.