Seabourn Sailors with impressions/experiences Cunard?

Have done (loved!) two SB t/a cruises on the triplets. Also one t/a on Silversea - that was our first ever voyage and it was wonderful.

Now I'm considering a January westbound crossing on Q. Victoria, Southampton-Ft. Lauderdale. Partly cuz of curiosity about the Cunard 'legend' and, full disclosure, partly cuz of an attractive price (Brittania). And, of course, because I like sea days.

I realize it's going to be a vastly different experience. But trying to determine if it will be TOO vastly different? Are there Seabourn sailors who've traveled on Cunard and enjoyed it. Or, did not?

Also, just discovered in my hurry-up, hurry-up research for this possible booking, that the QV cruise I'm considering will be her first coming out of dry-dock. Does anyone have an opinion as to whether that should give pause?

Thanks for any help!

Seabourn Ft. L'dale-Lisbon, March 07

Seabourn Lisbon-Ft. L'dale Nov. 09

(bear of little brain - don't recall which ships)