Replacing bathroom exhaust fans can be fun! You have already overcome the first hurdle in understanding how much air you need to move (52 CFM). With air movement, more isn’t necessarily always better. I’ll explain.
I have had a few friends that have pulled out one exhaust fan, and opted to install one of a much higher capacity (pulled out a 50-ish CFM fan, and put in a 110cfm). In today’s energy efficient and air-tight homes, this can cause a negative air pressure in your bathroom, pulling drafts, causing doors to move/jar, etc.
If you are concerned with the loudness of the fan you’re looking at, check the package for a rating in “sonnes” - this is a measure of the noise made by the fan. As @kevin1 pointed out, it’s always a great idea to watch for the energy star symbol when shopping.
As you asked, my Broan bathroom fan uses 28W of energy when activated. It is controlled by an electronic humidity control, and has not been identified by my Sense yet…