Is the 2 piece diffuser effective in the YS480?

Hello all,
I just put in an order for the YS480 and I want to be able to sear steaks, burgers and the like on it. I watched a bunch of YouTube videos on these and all the videos are using the YS640. I'm questioning if the YS480 is too small for the 2 piece diffuser. I still have time to change the order. Any advice?
Thank you,
Tom
I just put in an order for the YS480 and I want to be able to sear steaks, burgers and the like on it. I watched a bunch of YouTube videos on these and all the videos are using the YS640. I'm questioning if the YS480 is too small for the 2 piece diffuser. I still have time to change the order. Any advice?
Thank you,
Tom