Of the two I'd go for the MXR. That can sound a little scooped, but using the clean channel this 'color', as they call it, can be bypassed, leaving just 'Bass, Mid and Treble' EQ controls.
The distortion channel uses the scooped 'color' as part of the sound, and can't be removed.
The distortion isn't too spectacular, but useful for a little bit of grit to help cut through a busy mix.
They're both built like tanks, so that's not really a concern.