Anyone have feedback on single phase 5hp delta two bag collector?

have a chance go pick up a near new 5hp single phase double bag, I'm checking on the model number but believe it to be 50-765 or an older version.

Would this be much louder than my current grizzly 1.5hp single bag?
It seems like overkill but being up at this altitude in Colorado true suction dies out fast.

Cheers,

Travis

same as 861 except 866 is one phase vs. 3 phase.

Thoughts? Lounder than my 1.5hp grizz?