Quote Originally Posted by scottryan View Post
Maximum sound reduction is about a 4th or 5th priority in the real world.

The three most important priorities are:

Heavy duty
No POI shift
No group size increase

All leading brands will be within a few dB of each other and you will not be able to tell this with the human ear.
I'd have to agree with this assessment, with the possible exception of POI shift if you plan to leave the can on it full time.