Absolutely without a doubt, for us it's The Wave, they have the freshest and best food quality you will find in WDW even on their buffet.
I LOVE LOVE their grits, I never tried a grit

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until I tried theirs some years back and since then I try them everywhere (even outside of WDW) and still have yet to find any that are better!
Their biscuits are also awesome as is their eggs benedict. They have a few items on their buffet you just won't find at any other buffets. You can also order from their regular menu (but the buffet is the best value).
I just don't think any other breakfast in WDW compares...

...and it's also a great value if you're not on the
DDP! It's never really busy either, it's real hidden gem!
Feel free to check out our review with photos: (I post this all the time but I just can't say enough about their breakfast!)
Our Favorite WDW Breakfast - The Wave