We have sailed Celebrity just once (but have sailed with various other lines) and much prefer X. We were so ready after working all through the pandemic (not WFH) and we were, on the whole, not disappointed.
Veranda cabin (deck 6) was great, but both felt there was a lack of storage, particularly drawers. Meticulously looked after by our cabin steward.
MDR - tables for two are hard to come by BUT to require masks in the theatre and casino when sailing with only 1009 passengers and then think it acceptable to seat you 3 inches away from the next table is NOT socially distancing. We asked the dining room manager Faruk to move us to a more 'distanced' table and he accommodated our request every night.