I ask because the 16" impeller is standard on the CVMAX - which has a larger diameter (and possibly height or other geometry) cyclone. The motors are identical... I figured that there were two models for a reason - maybe the larger cyclone is needed to effectively separate dust/chips from the higher CFM/pressure blower. If not, why bother with the two cyclone sizes?
So I guess the question I should have asked is, why would I pick a CVMAX over a CV1800 with a 16" blower?