ModWright KWA 150 SE as mono blocks

Who here owns ModWright KWA 150 SE as mono blocks? Do you notice any substantial improvement vs using a single amplifier in stereo? I know they’re already dual mono, so I’m not sure if it would benefit my system to get another and bridge them each as monos. 

My speakers are Alta Lelantos which don’t require all too much power to drive (91db @ 4 ohms, 50-250w recommended whereas a single KWA 150 SE is 275W @ 4 ohms), but sometime more clean power is better.
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