Bryston Amp Experience Needed

I am currently running Kef R11’s (rated 15-300 watts) with an Emotiva XPA-2 Gen 3 amp (300wpc).

I am looking to upgrade to a Bryston from the used market.

I can get a 3B3 (200wpc) for around 3K (which is my budget), or I can not eat for a few months and get a 4B3 (300wpc) for around 4K.

Since I am used to the 300wpc on the Emotiva - am I going to notice a huge difference with a drop to 200wpc with the 3B3?

I do like to crank up the volume from time to time, but I generally listen at low to medium volumes.  I also mostly listen to modern metal/rock/synth-pop/r&b/hip-hop, and a lot of Tori Amos.....

Thx !!