I can't comment on the muzzy either as I've never shot it. The DZ however gets an A+ from me all around. Quick easy set up (most dificult part was tying into the buss cable), quick tuning, quiet and stellar proformance! This is the defination of Brick $#!^ House.
A truly amazing rest (a little pricey but amazing none the less)
As mentioned before, Good deals to be had on eBay!
Good luck