Are the later rooms strictly better than the earlier ones?

At the later stages of the game, you unlock "advanced" rooms that have the same base functionality as earlier ones. I'm referring to the Nuclear Reactor, Garden, Water Purification Plant and Nuka Cola Bottler, that replace the functionality of the Power Generator, Diner, Water Treatment Plant.

At first glance, it seems like a good idea to (eventually) replace all your old production rooms with the new ones, once unlocked.

Are these advanced rooms strictly better than the earlier ones? If not, what are the downsides?

Solution 1:

Yes, however they cost more caps.

All of the later rooms give you greater resource/dweller, as well as greater storage/room, but at a far greater cap cost.

The Nuclear Reactor, Water Purification Plant, and Garden are all more efficient than their base equivalents, and the Nuka Cola Plant is more efficient still (but far far more expensive again).