The originator of the MAP test says anything above 500 is fine. The test flushes plastic wrapped paste...not exactly like the real stuff. Some manufacturers have changed their design to maximize the results of the testing. The testing tells nothing about bowl wash, splashing, whether it shreads paper and poo, or how noisy it is. The first thing to look at is the side of the thing to trace the waste path. Are the curves smooth? Are the changes of angle sharp? Plastic wrapped paste is flexible enough and smooth enough to not jam up..the real stuff is sometimes sticky, and varies in diameter and length. Smooth curves with no sharp angles will work better in the long run.