Slow? Not really if you have a fine pedal like a 1965 Speed King, and years of practice and experience.This. I play a Sonor Safari bass drum 16x16. The extra inches make the drum more stable for mounting toms and cymbals off it and the extra depth is welcome for more output.
The 16 by 26 would be slow, having played a 17.5 X 24 SonorLite it is sluggish